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The m^(6)A reader SiYTH1 enhances drought tolerance by affecting the messenger RNA stability of genes related to stomatal closure and reactive oxygen species scavenging in setaria italica

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Journal of Integrative Plant Biology 2023年第12期65卷 2569-2586页

作者： Weiwei Luo Yuxiang Tang Shenglan Li Linlin Zhang Yuwei Liu Renliang Zhang Xianmin Diao Jingjuan Yu State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijing100193 China College of Life Sciences Hebei Agricultural UniversityBaoding071001 China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing100081 China

Foxtail millet(setaria italica),a vital drought-resistant crop,plays a significant role in ensuring food and nutritional ***,its drought resistance mechanism is not fully understood.N6-methyladenosine(m^(6)A)modification of RNA,a prevalent epi-transcriptomic modification in eukaryotes,provides a binding site for m^(6)A readers and affects plant growth and stress responses by regulating RNA *** this study,we unveiled that the YT521-B homology(YTH)family gene SiYTH1 positively regulated the drought tolerance of foxtail ***,the siyth1 mutant exhibited reduced stomatal closure and augmented accumulation of excessive H_(2)O_(2)under drought *** investigations demonstrated that SiYTH1 positively regulated the transcripts harboring m^(6)A modification related to stomatal closure and reactive oxygen species(ROS)scavenging under drought ***1 was uniformly distributed in the cytoplasm of SiYTH1-GFP transgenic foxtail *** formed dynamic liquid-like SiYTH1 cytosol condensates in response to drought ***,the cytoplasmic protein SiYTH1 was identified as a distinct m^(6)A reader,facilitating the stabilization of its directly bound SiARDP and ROS scavenging-related transcripts under drought ***,natural variation analysis revealed SiYTH1AGTG as the dominant allele responsible for drought tolerance in foxtail ***,this study provides novel insights into the intricate mechanism of m^(6)A reader-mediated drought tolerance and presents a valuable genetic resource for improving drought tolerance in foxtail millet breeding.

关键词： drought stress mRNA stability N^(6)-methyladenosine(m^(6)A)reader phase separation SiYTH1 setaria italica

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Calcineurin B-like protein 5(SiCBL5)in setaria italica enhances salt tolerance by regulating Na^(+)homeostasis

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The Crop Journal 2022年第1期10卷 234-242页

作者： Jingwei Yan Lan Yang Ya Liu Yingdi Zhao Tong Han Xingfen Miao Aying Zhang College of Life Sciences Nanjing Agricultural UniversityNanjing 210095JiangsuChina State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095JiangsuChina College of Agriculture Heilongjiang Bayi Agricultural UniversityDaqing 163319HeilongjiangChina

Salinity,a major abiotic stress,reduces plant growth and severely limits agricultural *** regulate salt uptake via calcineurin B-like proteins(CBLs).Although extensive studies of the functions of CBLs in response to salt stress have been conducted in Arabidopsis,their functions in setaria italica are still poorly *** foxtail millet genome encodes seven CBLs,of which only SiCBL4 was shown to be involved in salt *** of SiCBL5 in Arabidopsis thaliana sos3-1 mutant rescued its salt hypersensitivity phenotype,but that of other SiCBLs(SiCBL1,SiCBL2,SiCBL3,SiCBL6,and SiCBL7)did not rescue the salt hypersensitivity of the Atsos3-1 ***5 harbors an N-myristoylation motif and is located in the plasma *** of SiCBL5 in foxtail millet increased its salt tolerance,but its knockdown increased salt *** two-hybrid and firefly luciferase complementation imaging assays showed that SiCBL5 physically interacted with SiCIPK24 in vitro and in *** of SiCBL5,SiCIPK24,and SiSOS1 in yeast conferred a high-salt-tolerance *** to wild-type plants under salt stress conditions,SiCBL5 overexpressors showed lower accumulations of Na^(+) and stronger Na^(+) efflux,whereas RNAi-SiCBL5 plants showed higher accumulations of Na^(+) and weaker Na^(+) *** results indicate that SiCBL5 confers salt tolerance in foxtail millet by modulating Na^(+) homeostasis.

关键词： setaria italica SiCBL5 Salt tolerance Na^(+)homeostasis

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Identification of no pollen 1 provides a candidate gene for heterosis utilization in foxtail millet(setaria italica L.)

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The Crop Journal 2021年第6期9卷 1309-1319页

作者： Wei Zhang Hui Zhi Sha Tang Haoshan Zhang Yi Sui Guanqing Jia Chuanyin Wu Xianmin Diao Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Male sterility is a common biological phenomenon in plant kingdom and has been used to generate male-sterile lines, which are important genetic resources for commercial hybrid seed production. Although increasing numbers of male-sterility genes have been identified in rice(Oryza sativa) and Arabidopsis(Arabidopsis thaliana), few male-sterility-related genes have been characterized in foxtail millet(setaria italica). In this study, we isolated a male-sterile ethyl methanesulfonate-generated mutant in foxtail millet, no pollen 1(sinp1), which displayed abnormal Ubisch bodies, defective pollen exine and complete male sterility. Using bulk segregation analysis, we cloned SiNP1 and confirmed its function with CRISPR/Cas9 genome editing. SiNP1 encoded a putative glucose-methanol-choline *** localization showed that the SiNP1 protein was preferentially localized to the endoplasmic reticulum and was predominantly expressed in panicle. Transcriptome analysis revealed that many genes were differentially expressed in the sinp1 mutant, some of which encoded proteins putatively involved in carbohydrate metabolism, fatty acid biosynthesis, and lipid transport and metabolism, which were closely associated with pollen wall development. Metabolome analysis revealed the disturbance of flavonoids metabolism and fatty acid biosynthesis in the mutant. In conclusion, identification of SiNP1 provides a candidate male-sterility gene for heterosis utilization in foxtail millet and gives further insight into the mechanism of pollen reproduction in plants.

关键词： Foxtail millet setaria italica Male sterile No pollen 1 CRISPR/Cas9 Hybrid breeding

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The application of Fourier transform mid-infrared(FTIR) spectroscopy to identify variation in cell wall composition of setaria italica ecotypes

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Journal of Integrative Agriculture 2017年第6期16卷 1256-1267页

作者： Christopher Brown Antony P.Martin Christopher P.L.Grof Centre for Plant Science School of Environmental and Life Sciences University of Newcastle Newcastle 2308 Australia Light Sheet Microscopy Unit Hunter Medical Research Institute Newcastle 2305 Australia

Cell wall composition in monocotyledonous grasses has been identified as a key area of research for developing better feedstocks for forage and biofuel *** viridis and its close domesticated relative setaria italica have been chosen as suitable monocotyledonous models for plants possessing the C4 pathway of photosynthesis including sorghum,maize,sugarcane,switchgrass and Miscanthus×*** partial least squares regression（PLSR）models to predict *** stem composition have been generated,based upon Fourier transform mid-infrared（FTIR）spectra and calibrated with wet chemistry determinations of ground *** stem material measured using a modified version of the US National Renewable Energy Laboratory（NREL）acid hydrolysis *** models facilitated a high-throughput screening analysis for glucan,xylan,Klason lignin and acid soluble lignin（ASL）in a collection of 183 natural *** variants and clustered them into classes,some possessing unique *** predictive models provide a highly efficient screening tool for large scale breeding programs aimed at identifying lines or mutants possessing unique cell wall *** encoding key catalytic enzymes of the lignin biosynthesis pathway exhibit a high level of conservation with matching expression profiles,measured by RT-q PCR,among accessions of ***,which closely mirror profiles observed in the different developmental regions of an elongating internode of *** by RNASeq.

关键词： monocotyledonous C4 grasses lignin biosynthesis Fourier transform mid-infrared spectroscopy setaria italica

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谷子(setaria italica)显性雄性不育基因的发现

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作物学报 1986年第2期 73-78页

作者：胡洪凯马尚耀石艳华内蒙古赤峰市农业科学研究所

1978年我们在“澳大利亚谷×吐鲁番谷”的杂交后代中,得到1份雄性不育材料,经7个遗传世代的研究发现,其不育株测交和回交,后代育性始终按1∶1分离,自交后代育性分离为3(不育)∶1(可育);其可育株育性不分离。它的不育性是受核内的显性雄... 详细信息

1978年我们在“澳大利亚谷×吐鲁番谷”的杂交后代中,得到1份雄性不育材料,经7个遗传世代的研究发现,其不育株测交和回交,后代育性始终按1∶1分离,自交后代育性分离为3(不育)∶1(可育);其可育株育性不分离。它的不育性是受核内的显性雄性不育基因控制的。这是在谷子中的首次发现。它在理论研究、杂种优势利用和谷子育种中都有很高的价值。

关键词：不育株率杂种优势利用分离比例回交测交测验杂交小米谷子 setaria italica 育性表现可育株显性雄性不育基因

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谷子[setaria italica(L.)Beauv.]光合特性的分析——叶片解剖和叶绿体亚显微结构的特征

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山西农业大学学报(自然科学版) 1983年第1期 27-40+133-134页

作者：张世煌

为了研究谷子[setaria italica（L·）Beauv·]的光合作用碳素同化途径,本文对该植物的叶片解剖特征和细胞亚显微结构做了观察。试验结果表明: （1）谷子具有典型的Kranz型叶解剖特征。（2）谷子叶片中存在着二形叶绿体。MC叶绿体含... 详细信息

为了研究谷子[setaria italica（L·）Beauv·]的光合作用碳素同化途径,本文对该植物的叶片解剖特征和细胞亚显微结构做了观察。试验结果表明: （1）谷子具有典型的Kranz型叶解剖特征。（2）谷子叶片中存在着二形叶绿体。MC叶绿体含有清晰的基粒和周质网,而VBS叶绿体没有基粒,但是有大量的淀粉粒。这两方面都显示了C4植物的特征。本文对有关的文献做了综述,从七个方面确定谷子是C4植物:①光合初产物以四碳二羧酸为主;②Kranz型叶解剖特征和窄的叶脉间距;③二形叶绿体和周质网;④高的13C/12C比值;⑤PEPC和RuBPC的活性水平,分室隔离以及光合代谢中间产物对VBS叶绿体固定COz作用的促进和抑制;⑥低光呼吸;⑦较高的光合强度。谷子光呼吸和与光呼吸有关的生理指标基本符合C4特征,但稍高于典型C4植物的水平,这可能和谷子是温带起源的C4种有关。它在进化过程中所迂到的温度和光照条件对降低光呼吸作用的进化压力相对比热带环境的要小一些。谷子受现代育种技术的影响还比较少。当前应以改善植株的形态特征和扩充结实器官的容纳能力,提高经济系数作为进一步直接提高光合效率的育种基础。

关键词：谷子植物叶片光饱和点小米生物指标叶绿体基粒 setaria italica Beauv 光合特性叶片解剖细胞超微结构亚显微结构

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Variations in chlorophyll content, stomatal conductance, and photosynthesis in setaria EMS mutants

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Journal of Integrative Agriculture 2023年第6期22卷 1618-1630页

作者： TANG Chan-juan LUO Ming-zhao ZHANG Shuo JIA Guan-qing TANG Sha JIA Yan-chao ZHI Hui DIAO Xian-min Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

Chlorophyll (Chl) content,especially Chl b content,and stomatal conductance (G_s) are the key factors affecting the net photosynthetic rate (P_n).setaria italica,a diploid C_4 panicoid species with a simple genome and high transformation efficiency,has been widely accepted as a model in photosynthesis and drought-tolerance *** current study characterized Chl content,G_s,and P_n of 48 setaria mutants induced by ethyl methanesulfonate.A total of 24,34,and 35 mutants had significant variations in Chl content,G_s,and P_n,*** analysis showed a positive correlation between increased G_s and increased P_n,and a weak correlation between decreased Chl b content and decreased P_n was also ***,two mutants behaved with significantly decreased Chl b content but increased P_n compared to Yugu *** mutants behaved with significantly decreased G_s but did not decrease P_(n )compared to Yugu *** current study thus identified various genetic lines,further exploration of which would be beneficial to elucidate the relationship between Chl content,G_s,and P_n and the mechanism underlying why C_4 species are efficient at photosynthesis and water saving.

关键词： photosynthetic capacity chlorophyll content stomatal conductance EMS mutant variation setaria italica

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Haplotype variation and KASP markers for SiPSY1-A key gene controlling yellow kernel pigmentation in foxtail millet

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The Crop Journal 2023年第6期11卷 1902-1911页

作者： Rongjun Zuo Yanyan Zhang Yanbing Yang Chunfang Wang Hui Zhi Linlin Zhang Sha Tang Yanan Guan Shunguo Li Ruhong Cheng Zhonglin Shang Guanqing Jia Xianmin Diao Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Crop Research Institute Shandong Academy of Agricultural SciencesJinan 250100ShandongChina Institute of Millet Crops Hebei Academy of Agricultural and Forestry SciencesShijiazhuang 050035HebeiChina College of Life Sciences Hebei Normal UniversityShijiazhuang 050024HebeiChina

Carotenoid biosynthesis and accumulation are important in determining nutritional and commercial value of crop *** pigmentation of mature kernels caused by carotenoids is considered a vital quality trait in foxtail millet,an ancient and widely cultivated cereal crop across the *** regions associated with yellow pigment content(YPC),lutein and zeaxanthin in foxtail millet grains were identified by genome-wide association analysis(GWAS),and SiPSY1(Phytoene synthase 1 which regulates formation of the 40-carbon backbone of carotenoids)was confirmed as the main contributor to all three components by knockout and overexpression ***1 was expressed in seedlings,leaves,panicles,and mature seeds,and was subcellularly localized to *** of SiPSY1 in 15 DAP immature grains was responsible for YPC in mature *** of SiPSY1 combined with increased YPC in mature grains during domestication of foxtail millet was *** analysis suggested that expression level of SiPSY1 could be a selection target for future breeding programs,and a KASP marker was developed for selection of favorable SiPSY1 alleles in *** results of this work will benefit nutritional and commercial improvement of foxtail millet varieties,as well as other cereal crops.

关键词： Carotenoids Lutein Zeaxanthin Marker assisted selection setaria italica

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Chromosome Location of the Male-sterility and Yellow Seedling Gene in Line 1066A of Foxtail Millet

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Acta Botanica Sinica 2002年第10期44卷 1209-1212页

作者：王润奇高俊华毛丽萍杜瑞恒刁现民孙敬三河北省农林科学院谷子研究所石家庄050031 石家庄市桥东污水治理工程筹建处石家庄050031 中国科学院植物研究所北京100093

Using foxtail millet (setaria italica (L.) Beauv.) male-sterile line 1066A as female parent and Yugu 1 primary trisomic series (1 - 7) and tetrasomics 8, 9 as male parents, chromosome location of gene for male-sterility and yellow seedling in line 1066A was studied by primary trisomic analysis. The plants of F-1 generation of trisomics 2 - 9 were obtained by crossing with a great many plants of 1066A. F-1 generation of trisomics was similar to their male parent in morphologic characters, the color of their seedling was green, and pollen was partially fertile. The segregation ratio of fertility to sterility is 3:1 in F-2 generation of trisomics 2, 3, 4, 5, 7, 8 and 9; and 14:1 only in F-2 generation of trisomic 6 (chi(0.05)(2) = 0.012). The segregation ratio of green seedling to yellow seedling is 12:1 only in F-2 generation of trisomic 7 (chi(0.05)(2) = 0.31), but in other cases, this ratio is 3:1. The results indicated that the male-sterility gene was located on chromosome 6, and the gene for yellow seedling was monogenic recessive and located on chromosome 7. The rate of trisomics transmission by pollen was tested, trisomics 8 and 9 were the highest in rates of trisomics transmission and followed by trisomics 6 and 4.

关键词： setaria italica male-sterile yellow seedling primary trisomic analysis chromosome location

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