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The transcriptional control of LcIDL1–LcHSL2 complex by LcARF5 integrates auxin and ethylene signaling for litchi fruitlet abscission

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Journal of Integrative Plant Biology 2024年第6期66卷 1206-1226页

作者： Xingshuai Ma Zidi He Ye Yuan Zhijian Liang Hang Zhang Vilde Olsson Lalun Zhuoyi Liu Yanqing Zhang Zhiqiang Huang Yulian Huang Jianguo Li Minglei Zhao State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources Guangdong Laboratory for Lingnan Modern AgricultureKey Laboratory of Biology and Genetic Improvement of Horticultural Crops(South China)Ministry of Agriculture and Rural AffairsGuangdong Litchi Engineering Research CenterCollege of HorticultureSouth China Agricultural UniversityGuangzhou 510642China Dongguan Botanical Garden Dongguan 523128China section for Genetics and Evolutionary Biology Department of BiosciencesUniversity of OsloBlindernveien 31Oslo 0316Norway College of Agriculture Guangxi UniversityNanning 530004China

At the physiological level,the interplay between auxin and ethylene has long been recognized as crucial for the regulation of organ abscission in ***,the underlying molecular mechanisms remain ***,we identified transcription factors involved in indoleacetic acid(IAA)and ethylene(ET)signaling that directly regulate the expression of INFLORESCENCE DEFICIENT IN ABSCISSION(IDA)and its receptor HAESA(HAE),which are key components initiating ***,litchi IDAlike 1(LcIDL1)interacts with the receptor HAESA-like2(LcHSL2).Through in vitro and in vivo experiments,we determined that the auxin response factor LcARF5 directly binds and activates both LcIDL1 and ***,we found that the ETHYLENE INSENSITIVE 3-like transcription factor LcEIL3 directly binds and activates *** expression of IDA and HSL2 homologs was enhanced in Lc ARF5and Lc EIL3 transgenic Arabidopsis plants,but reduced in ein3 eil1 ***,the expressions of LcIDL1 and LcHSL2 were significantly decreased in Lc ARF5-and LcEIL3-silenced fruitlet abscission zones(FAZ),which correlated with a lower rate of fruitlet *** of auxin led to an increase in 1-aminocyclopropane-1-carboxylic acid(the precursor of ethylene)levels in the litchi FAZ,followed by abscission *** this process,LcRF5 and LcEIL3 were induced in the ***,our findings suggest that the molecular interactions between litchi AUXIN RESPONSE FACTOR 5(LcARF5)-LcIDL1/LcHSL2 and LcEIL3–LcIDL1 signaling modules play a role in regulating fruitlet abscission in litchi and provide a long-sought mechanistic explanation for how the interplay between auxin and ethylene is translated into the molecular events that initiate abscission.

关键词： auxin ethylene fruit abscission IDA–HAE/HSL2 litchi

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Nucleocytoplasmic Trafficking of the Arabidopsis WD40 Repeat Protein XIW1 Regulates ABI5 Stability and Abscisic Acid Responses

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Molecular Plant 2019年第12期12卷 1598-1611页

作者： Xuezhong XU Wang Wan Guobin Jiang Yue Xi Haijian Huang Jiajia Cai Yanan Chang Cheng-Guo Duan Satendra KMangrauthia Xinxiang Peng Jian-Kang Zhu Guohui Zhu College of Life Sciences South China Agricultural UniversityGuangzhou 510642China Shanghai Center for Plant Stress Biology and Center of Excellence for Molecular Plant Sciences Chinese Academy of SciencesShanghai 201602China Biotechnology section Indian Institute of Rice ResearchHyderabad 500030India State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources South China Agricultural UniversityGuangzhou 510642China Department of horticulture and Landscape Architecture Purdue UniversityWest LafayetteIN 47907USA Guangdong Provincial Key Laboratory of Protein Function and Regulation in

WD40 repeat-containing proteins(WD40 proteins)serve as versatile scaffolds for protein-protein interac-tions,modulating a variety of cellular processes such as plant stress and hormone *** we report the identification of a WD40 protein,XIW1(for XPO1-interacting WD40 protein 1),which positively regulates the abscisic acid(ABA)response in ***1 is located in the cytoplasm and *** found that it interacts with the nuclear transport receptor XPO1 and is exported by XPO1 from the *** of XIW1 reduces the induction of ABA-responsive genes and the accumulation of ABA Insensitive 5(ABI5),causing mutant plants with ABA-insensitive phenotypes during seed germination and seedling growth,and decreased drought stress *** treatment upregulates the expression of XIW1,and both ABA and abiotic stresses promote XIW1 accumulation in the nucleus,where it interacts with *** of XIW1 function results in rapid proteasomal degradation of *** together,these findings suggest that XIW1 is a nucleocytoplasmic shuttling protein and plays a positive role in ABA responses by interacting with and maintaining the stability of ABI5 in the nucleus.

关键词： WD40 protein ABA signaling nuclear export ABI5 stability XPO1

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Skim resequencing finely maps the downy mildew resistance loci RPF2 and RPF3 in spinach cultivars whale and Lazio

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horticulture Research 2023年第6期10卷 110-120页

作者： Gehendra Bhattarai Ainong Shi Beiquan Mou James C.Correll Department of horticulture University of ArkansasFayettevilleAR 72701USA USDA-ARS Crop Improvement and Protection Research Unit SalinasCA 93905USA Department of Plant Pathology University of ArkansasFayettevilleAR 72701USA

Commercial production of spinach(Spinacia oleracea L.)is centered in California and Arizona in the US,where downy mildew caused by Peronospora effusa is the most destructive *** typical races of *** have been reported to infect spinach,with 16 identified after *** regular appearance of new pathogen races breaks the resistance gene introgressed in *** attempted to map and delineate the RPF2 locus at a finer resolution,identify linked single nucleotide polymorphism(SNP)markers,and report candidate downy mildew resistance(R)*** populations segregating for RPF2 locus derived from resistant differential cultivar Lazio were infected using race 5 of *** and were used to study for genetic transmission and mapping analysis in this *** analysis performed with low coverage whole genome resequencing-generated SNP markers mapped the RPF2 locus between 0.47 to 1.46 Mb of chromosome 3 with peak SNP(Chr3_1,221,009)showing a LOD value of 61.6 in the GLM model in TASSEL,which was within 1.08 Kb from Spo12821,a gene that encodes CC-NBS-LRR plant disease resistance *** addition,a combined analysis of progeny panels of Lazio and Whale segregating for RPF2 and RPF3 loci delineated the resistance section in chromosome 3 between 1.18–1.23 and 1.75–1.76 *** study provides valuable information on the RPF2 resistance region in the spinach cultivar Lazio compared to RPF3 loci in the cultivar *** RPF2 and RPF3 specific SNP markers,plus the resistant genes reported here,could add value to breeding efforts to develop downy mildew resistant cultivars in the future.

关键词： spinach resistance cultivar

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Why Blueberries?

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Agricultural Sciences 2023年第8期14卷 1121-1131页

作者： Ebru Kafkas İpek Ürün Department of horticulture Faculty of Agriculture University of ?ukurova Adana Türkiye

Small berry fruits, like blueberries, are popular due to their appearance, are easy to eat and have a unique taste. Blueberries belong to the Cyanococcus section of the Ericaceae family. They are known to be one of the richest sources of natural antioxidants. Blueberries are a flavorful and colorful fruit, known for their health benefits attributed to numerous bioactive compounds with various therapeutic effects. The research aims to understand the metabolic and genetic factors that influence the nutritional and sensory qualities of blueberries. They can be consumed as either fresh or processed such as snacks, desserts, fruit salads, and with ice cream, yogurt or processed products such as frozen berries into conserves, purees and juices, dried fruit. They are rich in organic acids phenolic compounds that protect human against a wide variety of diseases since blueberry has high antioxidant activity. In this review, blueberry worldwide production trend and the effect of blueberry nutrient content on human health will be discussed. And there are also some studies carried out in recent years to determine the chemical composition such as sugars, organic acids and phenolic compounds by advanced methodologies in blueberry fruits. This review could be beneficial for future studies will be conducted on blueberry production and its nutritional content. .

关键词： Blueberries Superfoods Biochemical Properties Health Benefits Nutrient Composition

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Recent progresses in molecular postharvest biology

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Molecular horticulture 2022年第1期2卷 263-265页

作者： Su‑Sheng Gan Plant Biology section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853USA

Postharvest biology of horticultural crops is a scientific discipline of the biological processes that occur in horticultural crops after *** is the foundation for practical strategies and technology for prolonging the postharvest longevity of *** postharvest longevity includes storage,logistics and transportation,and shelf *** is estimated that up to 70%of produce are lost after *** of postharvest biological processes will allow us to devise ways to control these processes for improving the produce quality(and quantity)and reducing the economic loss.

关键词： shelf crops harvest

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Effects of Different Organic Residues on Rice Yield and Soil Quality

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Journal of Mountain Science 2012年第5期9卷 715-722页

作者： PENG Li LIU Wei SU Chunjiang LI Ping FANG Yan WANG Xiaolan SUN Lian Institute of Mountain Hazards and Environment Chinese Academy of SciencesNo.9.Section 4South Renmin RoadChina Graduate University of Chinese Academy of Sciences Beijing 100049China Institute of horticulture Sichuan Academy of Agricultural SciencesChengdu 610066China Key Laboratory of Horticultural Crops Biology and Germplasm Enhancement in Southwest Regions Ministry of AgricultureChengdu 61oo66China Southwest Jiaotong University Chengdu 610031China Sichuan Technology and Business Collage Dujiangyan 611844China Sichuan Provincial Environmental Information Center Chengdu 610015China

Calcaric regosols are a valuable land resource, distributed widely across western China. Soil quality has deteriorated considerably in recent years owing to the blind pursuit of economic benefits. A 2-year field experiment was carried out to evaluate the effects of using spent mushroom compost, leguminous plant (Vicia sepium L.) compost, and a combination of the two (at a 1:1 and 2:1 ratio), on rice yield and soil quality in a suburb of China. Vicia sepium L. composted with spent mushroom compost at a 1:1 ratio produced the highest grain and stover yield, grain and stover phosphorus concentration, and phosphorus uptake of rice; they were 56.5%, 93.2%, 89.3%, 198.6% and 22.2% greater than control soil, respectively. The 2:1 ratio (Vicia sepium L.: spent mushroom compost) produced the highest grain N concentration, stover N concentration, and N uptake; they were 31.6%, 31.4%, and 40.7% higher than control, respectively. Soil physical, chemical, and environmental properties were improved with the application of Vicia sepium L. composted with spent mushroom compost at a 2:1 ratio. In particular, soil water-stable aggregates, organic carbon, particulate organic carbon, total nitrogen, available potassium, and cation exchange capacity increased, whereas bulk density, pH, and phytoavailable heavy metals decreased. This organic treatment is beneficial to improve soil quality indicators, and contribute to soil restoration.

关键词： Co-composting Leguminous plants Soilquality indicators Soil restoration Spent mushroomcompost

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Generating colorful carrot germplasm through metabolic engineering of betalains pigments

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horticulture Research 2023年第4期10卷 63-70页

作者： Yuan-Jie Deng Ao-Qi Duan Hui Liu Ya-Hui Wang Rong-Rong Zhang Zhi-Sheng Xu Ai-Sheng Xiong National Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East ChinaCollege of HorticultureNanjing Agricultural University1 WeigangNanjing 210095China

Betalains are tyrosine-derived plant pigments exclusively found in the Caryophyllales order and some higher fungi and generally classified into two groups:red-violet betacyanins and yellow-orange *** attract great scientific and economic interest because of their relatively simple biosynthesis pathway,attractive colors and health-promoting ***-expressing two core genes BvCYP76AD1 and BvDODA1 with or without a glycosyltransferase gene MjcDOPA5GT allowed the engineering of carrot(an important taproot vegetable)to produce a palette of unique *** highest total betalains content,943.2μg·g^(−1) DW,was obtained in carrot taproot transformed with p35S:RUBY which produces all of the necessary enzymes for betalains ***-specific production of betalains slightly relieved tyrosine consumption revealing the possible bottleneck in betalains ***,a unique volcano-like phenotype in carrot taproot cross-section was created by vascular cambium-specific production of *** betalains-fortified carrot in this study is thus anticipated to be used as functional vegetable and colorful carrot germplasm in breeding to promote health.

关键词： germplasm breeding orange

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Chloroplast genomic diversity in Bulbophyllum section Macrocaulia(Orchidaceae,Epidendroideae,Malaxideae):Insights into species divergence and adaptive evolution

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Plant Diversity 2021年第5期43卷 350-361页

作者： Hanqing Tang Lu Tang Shicheng Shao Yulan Peng Lu Li Yan Luo Gardening and horticulture Department Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglunMengla666303YunnanChina College of Forestry Shanxi Agricultural UniversityTaiguJinzhong030800ShanxiChina Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration Biodiversity Conservation Chengdu Institute of BiologyChinese Academy of SciencesChengduSichuan610041China Department of Biodiversity Conservation Southwest Forestry UniversityKunming650224YunnanChina Gardening and horticulture Department Core Botanical GardensChinese Academy of SciencesMenglunMengla666303YunnanChina

Bulbophyllum is the largest genus in Orchidaceae with a pan tropical *** to highly significant diversifications,it is considered to be one of the most taxonomically and phylogenetically complex *** diversification pattern and evolutionary adaptation of chloroplast genomes are poorly understood in this species-rich genus,and suitable molecular markers are necessary for species determination and phylogenetic analysis.A natural Asian section Macrocaulia was selected to estimate the interspecific divergence of chloroplast genomes in this ***,we sequenced the complete chloroplast genome of four Bulbophyllum species,including three species from section *** four chloroplast genomes had a typical quadripartite structure with a genome size ranged from 156,182 to 158,524 *** chloroplast genomes included 113 unique genes encoding 79 proteins,30 tRNAs and 4 *** of the four chloroplast genomes showed that the three species from section Macrocaulia had similar structure and gene contents,and shared a number of indels,which mainly contribute to its *** addition,interspecific divergence level was also *** exclusive indels and polymorphism SSR loci might be used for taxonomical identification and determining interspecific polymorphisms.A total of 20 intergenic regions and three coding genes of the most variable hotspot regions were proposed as candidate effective molecular markers for future phylogenetic relationships at different taxonomical levels and species divergence in *** of chloroplast genes in four Bulbophyllum species were under purifying selection,while 13 sites within six genes exhibited sitespecific selection.A whole chloroplast genome phylogenetic analysis based on Maximum Likelihood,Bayesian and Parsimony methods all supported the monophyly of section Macrocaulia and the genus of *** findings provide valuable molecular markers to use in accurately identifying species,clar

关键词： Chloroplast genome Sequence divergence DNA markers SSR Bulbophyllum Orchidaceae

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An elliptical blade is not a true ellipse,but a superellipse–Evidence from two Michelia species

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Journal of Forestry Research 2022年第4期33卷 1341-1348页

作者： Yuping Li Karl JNiklas Johan Gielis Ülo Niinemets Julian Schrader Rong Wang Peijian Shi College of horticulture Jinling Institute of TechnologyNanjing 210038People’s Republic of China Bamboo Research Institute Nanjing Forestry UniversityNanjing 210037People’s Republic of China Plant Biology section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853USA Department of Biosciences Engineering University of AntwerpB-2020 AntwerpBelgium Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences51006 TartuEstonia Estonian Academy of Sciences 10130 TallinnEstonia Department of Biological Sciences Macquarie UniversitySydneyNSW 2109Australia Biodiversity Macroecology and BiogeographyUniversity of Göttingen37077 GöttingenGermany

The shape of leaf laminae exhibits considerable diversity and complexity that reflects adaptations to environmental factors such as ambient light and precipitation as well as phyletic *** leaves appear to be elliptical which may represent a‘default’developmental ***,whether their geometry truly conforms to the ellipse equation(EE),i.e.,(x/a)^(2)+(y/b)^(2)=1,remains *** alternative is described by the superellipse equation(SE),a generalized version of EE,i.e.,|x/a|^(n)+|y/b|^(n)=*** test the efficacy of EE versus SE to describe leaf geometry,the leaf shapes of two Michelia species(i.e.,*** ***,and ***),were investigated using 60 leaves from each *** shows that the majority of leaves(118 out of 120)had adjusted root-mean-square errors of<0.05 for the nonlinear fitting of SE to leaf geometry,i.e.,the mean absolute deviation from the polar point to leaf marginal points was smaller than 5%of the radius of a hypothesized circle with its area equaling leaf *** estimates of n for the two species were<2,indicating that all sampled leaves conformed to SE and not to *** study confirms the existence of SE in leaves,linking this to its potential functional advantages,particularly the possible influence of leaf shape on hydraulic conductance.

关键词： Bilateral symmetry Leaf ellipticalness index Leaf laminae Leaf roundness index Magnoliaceae

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A community resource for exploring and utilizing genetic diversity in the USDA pea single plant plus collection

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horticulture Research 2017年第1期4卷 293-300页

作者： William L.Holdsworth Elodie Gazave Peng Cheng James R.Myers Michael A.Gore Clarice J.Coyne Rebecca J.McGee Michael Mazourek Plant Breeding and Genetics section School of Integrative Plant ScienceCornell UniversityIthaca14853NYUSA Department of Crop and Soil Sciences Washington State UniversityPullman99164WAUSA Department of horticulture Oregon State UniversityCorvallis97331ORUSA US Department of Agriculture Agricultural Research ServiceWestern Regional Plant Introduction StationPullman99164WAUSA US Department of Agriculture Agricultural Research ServiceGrain Legume Genetics and Physiology Research UnitPullman99164WAUSA Rupp Seeds WauseonOH 43567USA

Globally,pea(Pisum sativum L.)is an important temperate legume crop for food,feed and fodder,and many breeding programs develop cultivars adapted to these *** order to assist pea development efforts,we assembled the USDA Pea Single Plant Plus Collection(PSPPC),which contains 431 *** accessions with morphological,geographic and taxonomic *** collection was characterized genetically in order to maximize its value for trait mapping and genomics-assisted *** that end,we used genotyping-by-sequencing—a cost-effective method for de novo single-nucleotide polymorphism(SNP)marker discovery—to generate 66591 high-quality *** data facilitated the identification of accessions divergent from mainstream breeding germplasm that could serve as sources of novel,favorable *** particular,a group of accessions from Central Asia appear nearly as diverse as a sister species,***,and subspecies,*** *** genotypes can be paired with new and existing phenotype data for trait mapping;as proof-of-concept,we localized Mendel’s A gene controlling flower color to its known *** also used SNP data to define a smaller core collection of 108 accessions with similar levels of genetic diversity as the entire PSPPC,resulting in a smaller germplasm set for research screening and evaluation under limited *** together,the results presented in this study along with the release of a publicly available SNP data set comprise a valuable resource for supporting worldwide pea genetic improvement efforts.

关键词： breeding cultivar utilizing

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