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Revealing the specific regulations of nitric oxide on the postharvest ripening and senescence of bitter melon fruit

aBIOTECH 2024年第1期5卷 29-45页

作者： Hongwei Wang Ling Li Lili Ma Alisdair R.Fernie Anzhen Fu Chunmei Bai Zhaoze Sang Susu Guo Fan Zhang Qing Wang Yanyan Zheng Jinhua Zuo Key Laboratory of Vegetable Postharvest Processing Ministry of AgricultureBeijing Key Laboratory of Fruits and Vegetable Storage and ProcessingKey Laboratory of Biology and Genetic Improvement of Horticultural Crops(North China)of Ministry of AgricultureKey Laboratory of Urban Agriculture(North)of Ministry of AgricultureBeijing Vegetable Research CenterInstitute of Agro-Products Processing and Food NutritionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China College of Food Science and Biotechnology Tianjin Agricultural UniversityTianjin 300392China Max Planck institute of Molecular plant physiology 14476 Potsdam GolmGermany institute of Food Science and Technology Chinese Academy of Agricultural SciencesBeijingChina

Bitter melon fruit is susceptible to yellowing,softening,and rotting under room-temperature storage conditions,resulting in reduced commercial *** oxide(NO)is an important signaling molecule and plays a crucial role in regulating the fruit postharvest *** this study,we investigated the effects of NO treatment on changes in sensory and firmness of bitter melon fruit during postharvest ***,transcriptomic,metabolomic,and proteomic analyses were performed to elucidate the regulatory mechanisms through which No treatment delays the ripening and senescence of bitter melon *** results show that differentially expressed genes(DEGs)were involved in fruit texture(CSLE,β-Gal,and PME),plant hormone signal transduction(ACS,JAR4,and AUX28),and fruit flavor and aroma(SUS2,LOX,and GDH2).In addition,proteins differentially abundant were associated with fruit texture(PLY,PME,and PGA)and plant hormone signal transduction(PBL15,JAR1,and PYL9).Moreover,No significantly increased the abundance of key enzymes involved in the phenylpropanoid biosynthetic pathway,thus enhancing the disease resistance and alleviating softening of bitter melon ***,differential metabolites mainly included phenolic acids,terpenoids,and *** results provide a theoretical basis for further studies on the physiological changes associated with postharvest ripening and senescence of bitter melon fruit.

关键词： Bitter melon NO treatment Postharvest Ripening and senescence

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The light and hypoxia induced gene ZmPORB1 determines tocopherol content in the maize kernel

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Science China(Life Sciences) 2024年第3期67卷 435-448页

作者： Nannan Liu Yuanhao Du Shijuan Yan Wei Chen Min Deng Shutu Xu Hong Wang Wei Zhan Wenjie Huang Yan Yin Xiaohong Yang Qiao Zhao Alisdair R.Fernie Jianbing Yan National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Hubei Hongshan Laboratory Wuhan 430070China Agro-biological Gene Research Center Guangdong Academy of Agricultural SciencesGuangzhou 510640China College of Agronomy Hunan Agricultural UniversityChangsha 410128China College of Agronomy Northwest A&F UniversityXi'an 710000China State Key Laboratory of North China Crop Improvement and Regulation Hebei Sub-center of National Maize Improvement Center of ChinaCollege of AgronomyHebei Agricultural UniversityBaoding 071001China College of Life Sciences South-Central Minzu UniversityWuhan 430070China plant Science Facility of the institute of Botany Chinese Academy of SciencesBeijing 100093China National Maize Improvement Center of China Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100093China Shenzhen Key Laboratory of Synthetic Genomics Guangdong Provincial Key Laboratory of Synthetic GenomicsShenzhen Institute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Max Planck institute of Molecular plant physiology Potsdam-Golm 14476Germany

Tocopherol is an important lipid-soluble antioxidant beneficial for both human health and plant growth. Here, we fine mapped a major QTLqVE1 affecting γ-tocopherol content in maize kernel, positionally cloned and confirmed the underlying gene ZmPORB1(por1), as a protochlorophyllide oxidoreductase. A 13.7 kb insertion reduced the tocopherol and chlorophyll content, and the photosynthetic activity by repressing ZmPORB1 expression in embryos of NIL-K22, but did not affect the levels of the tocopherol precursors HGA(homogentisic acid)and PMP(phytyl monophosphate). Furthermore, ZmPORB1 is inducible by low oxygen and light, thereby involved in the hypoxia response in developing embryos. Concurrent with natural hypoxia in embryos, the redox state has been changed with NO increasing and H_(2)O_(2) decreasing, which lowered γ-tocopherol content via scavenging reactive nitrogen species. In conclusion, we proposed that the lower lightharvesting chlorophyll content weakened embryo photosynthesis, leading to fewer oxygen supplies and consequently diverse hypoxic responses including an elevated γ-tocopherol consumption. Our findings shed light on the mechanism for fine-tuning endogenous oxygen concentration in the maize embryo through a novel feedback pathway involving the light and low oxygen regulation of ZmPORB1 expression and chlorophyll content.

关键词： maize tocopherol hypoxia photosynthesis ZmPORB1

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IbNIEL-mediated degradation of IbNAC087 regulates jasmonic acid-dependent salt and drought tolerance in sweet potato

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Journal of Integrative plant Biology 2024年第2期66卷 176-195页

作者： Xu Li Zhen Wang Sifan Sun Zhuoru Dai Jun Zhang Wenbin Wang Kui Peng Wenhao Geng Shuanghong Xia Qingchang Liu Hong Zhai Shaopei Gao Ning Zhao Feng Tian Huan Zhang Shaozhen He Key Laboratory of Sweet Potato Biology and Biotechnology Ministry of Agriculture and Rural Affairs/Beijing Key Laboratory of Crop Genetic Improvement/Laboratory of Crop Heterosis&Utilization and Joint Laboratory for International Cooperation in Crop Molecular BreedingMinistry of EducationCollege of Agronomy&BiotechnologyChina Agricultural UniversityBeijing 100193China Sanya institute of China Agricultural University Sanya 572025China State Key Laboratory of plant physiology and Biochemistry National Maize Improvement CenterKey Laboratory of Biology and Genetic Improvement of MaizeBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Sweet potato(Ipomoea batatas[L.]Lam.)is a crucial staple and bioenergy *** abiotic stress tolerance holds significant importance in fully utilizing marginal *** processes regulate abiotic stress responses,yet the molecular regulatory mechanisms in sweet potato remain *** this study,a NAC(NAM,ATAF1/2,and CUC2)transcription factor,IbNAC087,was identified,which is commonly upregulated in salt-and drought-tolerant *** of IbNAC087 increased salt and drought tolerance by increasing jasmonic acid(JA)accumulation and activating reactive oxygen species(ROS)scavenging,whereas silencing this gene resulted in opposite ***-rich IbNAC087-OE(overexpression)plants exhibited more stomatal closure than wild-type(WT)and IbNAC087-Ri plants under NaCl,polyethylene glycol,and methyl jasmonate ***087 functions as a nuclear transcriptional activator and directly activates the expression of the key JA biosynthesisrelated genes lipoxygenase(IbLOX)and allene oxide synthase(IbAOS).Moreover,IbNAC087 physically interacted with a RING-type E3 ubiquitin ligase NAC087-INTERACTING E3 LIGASE(IbNIEL),negatively regulating salt and drought tolerance in sweet *** ubiquitinated IbNAC087 to promote 26S proteasome degradation,which weakened its activation on IbLOX and *** findings provide insights into the mechanism underlying the IbNIEL-IbNAC087 module regulation of JA-dependent salt and drought response in sweet potato and provide candidate genes for improving abiotic stress tolerance in crops.

关键词： abiotic tolerance IbNAC087 IbNIEL JA sweet potato

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Extent and Structure of Phenotypic Variability in Solenostemon rotundifolius Germplasm from Ghana and Burkina Faso

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Agricultural Sciences 2024年第1期15卷 146-164页

作者： Ignace Tonde Romaric Kiswendsida Nanema Alphonse Tegawende Sawadogo Department of plant Biology and plant physiology Faculty of Earth and Life Sciences Joseph Ki-Zerbo University Ouagadougou Burkina Faso É quipe Génétique et Amélioration des Plantes Laboratoire Biosciences Joseph Ki-Zerbo University Ouagadougou Burkina Faso

Solenostemon rotundifolius is a species belonging to the Lamiaceae family. It is currently one of the minor plants of high socio-economic interest. One of the limitations to promoting this species in Burkina Faso is the lack of varieties that meet consumers’ demands. Implementing a breeding program is an important step toward achieving this goal. Such a program is based on the variability of agronomical traits of interest within evaluated germplasm. This study aimed to assess the level of two germplasms variability of S. rotundifolius from Ghana and Burkina Faso for traits related to vegetative development, cycle, and yield. Agromorphological characterization of 174 accessions, including 116 from Ghana and 58 from Burkina Faso was carried out in Randomised Complete Block Design with three replications. The characterization was made on the basis of fifteen (15) quantitative traits related to the canopy and leaf size, the cycle, and the yield. Analysis of variance revealed significant differences between accessions within each germplasm for all the evaluated traits. The analysis of the structuration of this agromorphological variability allowed organizing the accessions into different groups. These results could lead to the identification of accessions within each germplasm for breeding purposes or future research on genotype-environment interactions.

关键词： Lamiaceae Tuber Germplasm Agromorphological Variability

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Effects of Inoculation with Phosphate Solubilizing Bacteria on the physiology,Biochemistry,and Expression of Genes Related to the Protective Enzyme System of Fritillaria taipaiensis ***

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 247-260页

作者： Zhifen Shi Fumei Pan Xiaotian Kong Jiaqi Lang Mingyan Ye Qian Wu Guangzhi Wang Liang Han Nong Zhou College of Pharmacy Chengdu University of Traditional Chinese MedicineChengdu611130China College of Pharmacy Dali UniversityDali671000China College of Food and Biological Engineering Chongqing Three Gorges UniversityChongqing404120China Diqing Tibetan Autonomous Prefecture institute of Plateau Biology Diqing674400China Chongqing institute of Medicinal plant Cultivation Chongqing408435China

Fritillaria taipaiensis *** is a widely used medicinal herb in treating pulmonary *** recent years,its wild resources have become scarce,and the demand for efficient artificial cultivation has significantly *** article is the first to apply phosphate solubilizing bacteria isolated from the rhizosphere soil of *** *** to the cultivation process of *** *** aim is to identify suitable reference strains for the artificial cultivation and industrial development of *** *** by examining the effects of various phosphate solubilizing bacteria and their combinations on photosynthesis,physiological and biochemical properties,and gene expression related to the protective enzyme system in *** *** experiment,conducted in pots at room temperature,included a control group(CK)and groups inoculated with inorganic phosphorussolubilizing bacteria:W1(Bacillus cereus),W2(Serratia plymuthica),W12(Bacillus cereus and Serratia plymuthica),and groups inoculated with organophosphorus-solubilizing bacteria:Y1(Bacillus cereus),Y2(Bacillus cereus),Y12(Bacillus cereus and Bacillus cereus),totaling seven *** to CK,most growth indices in the bacterial addition groups showed significant differences,with W12 achieving the highest values in all indices except the leaf area *** content of photosynthetic pigments,photosynthetic parameters,and osmoregulatory substances increased variably in each bacterial treatment group.W12 exhibited the highest content of chlorophyll a and soluble protein,while W1 had the highest free proline *** activities of peroxidase(POD),superoxide dismutase(SOD),and catalase(CAT)in all inoculated groups were higher than in CK,with significant changes in SOD and CAT *** malondialdehyde(MDA)content in all inoculated groups was lower than in CK,with Y12 being the lowest,at approximately 30%of *** expression corresponding to these three enzymes also increased var

关键词： Fritillaria taipaiensis P.Y.Li phosphate solubiliozing bacteria photosynthesis physiology and biochemistry protective enzymes

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The response of roots and the rhizosphere environment to integrative cultivation practices in paddy rice

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Journal of Integrative Agriculture 2024年第6期23卷 1879-1896页

作者： Hanzhu Gu Xian Wang Minhao Zhang Wenjiang Jing Hao Wu Zhilin Xiao Weiyang Zhang Junfei Gu Lijun Liu Zhiqin Wang Jianhua Zhang Jianchang Yang Hao Zhang Jiangsu Key Laboratory of Crop Genetics and physiology/Jiangsu Key Laboratory of Crop Cultivation and physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Agricultural College Yangzhou UniversityYangzhou 225009China Taizhou institute of Agricultural Science Jiangsu Academy of Agricultural SciencesTaizhou 225300China State Key Laboratory of Agrobiotechnology School of Life SciencesThe Chinese University of Hong KongShatinHong Kong 999077China Department of Biology Faculty of ScienceHong Kong Baptist UniversityKowloonHong Kong 999077China

Integrative cultivation practices(ICPs)are essential for enhancing cereal yield and resource use ***,the effects of ICP on the rhizosphere environment and roots of paddy rice are still poorly *** this study,four rice varieties were produced in the *** variety was treated with six different cultivation techniques,including zero nitrogen application(0 N),local farmers’practice(LFP),nitrogen reduction(NR),and three progressive ICP techniques comprised of enhanced fertilizer N practice and increased plant density(ICP1),a treatment similar to ICP1 but with alternate wetting and moderate drying instead of continuous flooding(ICP2),and the same practices as ICP2 with the application of organic fertilizer(ICP3).The ICPs had greater grain production and nitrogen use efficiency than the other three *** length,dry weight,root diameter,activity of root oxidation,root bleeding rate,zeatin and zeatin riboside compositions,and total organic acids in root exudates were elevated with the introduction of the successive cultivation *** enhanced nitrate nitrogen,the activities of urease and invertase,and the diversity of microbes(bacteria)in rhizosphere and non-rhizosphere soil,while reducing the ammonium nitrogen *** nutrient contents(ammonium nitrogen,total nitrogen,total potassium,total phosphorus,nitrate,and available phosphorus)and urease activity in rhizosphere soil were reduced in all treatments in comparison with the non-rhizosphere soil,but the invertase activity and bacterial diversity were *** main root morphology and physiology,and the ammonium nitrogen contents in rhizosphere soil at the primary stages were closely correlated with grain yield and internal nitrogen use *** findings suggest that the coordinated enhancement of the root system and the environment of the rhizosphere under integrative cultivation approaches may lead to higher rice production.

关键词： rice(Oryza sativa L.) nitrogen use efficiency grain yield integrative cultivation practices roots

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Structural-Adaptation Features of Assimilation Organs of the Species Salsola incanescens Cam. in Conditions of Kyzylkum

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American Journal of plant Sciences 2024年第7期15卷 589-602页

作者： Guli A. Ibrokhimova Guljan M. Duschanova Department of Botany and plant physiology National University of Uzbekistan named after Mirzo Ulugbek Tashkent Uzbekistan Department of Botany and Ecology Tashkent State Pedagogical University named after Nizami Tashkent Uzbekistan

The article presents the results of the morpho-anatomical structure of the assimilation organs of the species Salsola leptoclada Gand, which is widespread in the Kyzylkum desert region of Uzbekistan, and reveals the structural, diagnostic and adaptive features. In the assimilation organs, Kranz type of mesophyll was found: in the cotyledons of the Kranz-spherical (Atriplicoid) type, and in the leaf—mesophylls of the Kranz-centric (Salsoloid) and Kranz-ventrodorsal type. These revealed diagnostic features of the assimilating organs of this species in arid conditions noted C4-type photosynthesis. Based on the comparative biometric analysis of quantitative indices of the anatomical features of the assimilating organs, xero-halomorphic features predominate. Halomorphic features are in the cotyledons—thin outer walls of the epidermal cells;few stomata of the anomocytic and paracytic type;few rows of spongy cells (3 - 4 rows);few vascular bundles of the collateral type and xylem, in the leaf—large and thin outer walls of the epidermal cells;succulence of the leaf mesophyll, the presence of aquiferous cells;large palisade, keratin and aquiferous cells. Xeromorphic features in the cotyledons—small and numerous epidermal cells and hemiparacytic type stomata also deep immersion;small palisade cells and a high palisade index, small spongy, hypodermal and keratin cells;small diameter of the xylem in vascular bundles;in the leaf numerous epidermal cells and stomata also deeply immersed;presence and numerous multicellular nodular, dentate trichomes;multi-row water-bearing cells;high palisade index;small and numerous xylem;numerous peripheral vascular bundles of the collateral type. These identified specific diagnostic features showing adaptation to arid conditions can also serve in the identification of plant materials.

关键词： Morphology Anatomy Cotyledon Leaf Salsola incanescens South-West Kyzylkum

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Expanding the targeting scope of CRISPR/Cas9-mediated genome editing by Cas9 variants in Brassica

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aBIOTECH 2024年第2期5卷 202-208页

作者： Wenjing Li Xuan Li Chunyang Wang Guanzhong Huo Xinru Zhang Jintai Yu Xiaoxiao Yu Jing Li Chao Zhang Jianjun Zhao Yan Li Jun Li State Key Laboratory of North China Crop Improvement and Regulation College of Life SciencesHebei Agricultural UniversityBaoding 071001China Hebei Key Laboratory of plant physiology and Molecular Pathology Hebei Agricultural UniversityBaoding 071001China Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei Collaborative Innovation Center of Vegetable Industry in HebeiCollege of HorticultureHebei Agricultural UniversityBaoding 071001China College of Modern Science and Technology Hebei Agricultural UniversityBaoding 071001China

CRISPR/Cas9,presently the most widely used genome editing technology,has provided great potential for functional studies and plant ***,the strict requirement for a protospacer adjacent motif(PAM)has hindered the application of the CRISPR/Cas9 system because the number of targetable genomic sites is ***,the engineered variants Cas9-NG,SpG,and SpRY,which recognize non-canonical PAMs,have been successfully tested in plants(mainly in rice,a monocot).In this study,we evaluated the targeted mutagenesis capabilities of these Cas9 variants in two important Brassica vegetables,Chinese cabbage(Brassica rapa ***)and cabbage(Brassica oleracea ***).Both Cas9-NG and SpG induced efficient mutagenesis at NGN PAMs,while SpG outperformed Cas9-NG at NGC and NGT *** achieved efficient editing at almost all PAMs(NRN[NYN),albeit with some self-targeting activity at transfer(T)-DNA *** SpRY-induced mutants were detected in cabbage plants in a PAM-less ***,an adenine base editor was developed using SpRY and TadA8e deaminase that induced A-to-G conversions within target sites using non-canonical ***,the toolboxes developed here induced successful genome editing in Chinese cabbage and *** work further expands the targeting scope of genome editing and paves the way for future basic research and genetic improvement in Brassica.

关键词： Brassica Cas9 variants CRISPR Genome editing Non-canonical PAM

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Auxin-brassinosteroid crosstalk:Regulating rice plant architecture and grain shape

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The Crop Journal 2024年第4期12卷 953-963页

作者： Meidi Wu Jing Zhou Qian Li Dunfan Quan Qingwen Wang Yong Gao Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genetics and physiology Yangzhou UniversityYangzhou 225009JiangsuChina Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of EducationYangzhou UniversityYangzhou 225009JiangsuChina

Rice(Oryza sativa)plant architecture and grain shape,which determine grain quality and yield,are modulatedby auxin and brassinosteroid via regulation of cell elongation and *** review the signaltransduction of these h... 详细信息

关键词： Auxin Brassinosteroid Auxin-brassinosteroid crosstalk plant architecture Grain shape

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Hesperidin ameliorates H_(2)O_(2)-induced bovine mammary epithelial cell oxidative stress via the Nrf2 signaling pathway

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1737-1750页

作者： Qi Huang Jiashuo Liu Can Peng Xuefeng Han Zhiliang Tan CAS Key Laboratory for Agro‑Ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina State Key Laboratory of Animal Nutrition and Feeding Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China

Background Hesperidin is a citrus flavonoid with anti-inflammatory and antioxidant potential. However, its protective effects on bovine mammary epithelial cells(b MECs) exposed to oxidative stress have not been *** In this study, we investigated the effects of hesperidin on H_(2)O_(2)-induced oxidative stress in b MECs and the underlying molecular mechanism. We found that hesperidin attenuated H_(2)O_(2)-induced cell damage by reducing reactive oxygen species(ROS) and malondialdehyde(MDA) levels, increasing catalase(CAT) activity, and improving cell proliferation and mitochondrial membrane potential. Moreover, hesperidin activated the Keap1/Nrf2/ARE signaling pathway by inducing the nuclear translocation of Nrf2 and the expression of its downstream genes NQO1 and HO-1, which are antioxidant enzymes involved in ROS scavenging and cellular redox balance. The protective effects of hesperidin were blocked by the Nrf2 inhibitor ML385, indicating that they were Nrf2 *** Our results suggest that hesperidin could protect b MECs from oxidative stress injury by activating the Nrf2 signaling pathway, suggesting that hesperidin as a natural antioxidant has positive potential as a feed additive or plant drug to promote the health benefits of bovine mammary.

关键词： Bovine mammary epithelial cell Hesperidin Nrf2 signaling pathway Oxidative stress

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