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Rice SPL10 positively regulates trichome development through expression of HL6 and auxin-related genes

Journal of Integrative Plant Biology 2021年第8期63卷 1521-1536页

作者： Jinjie Li Bo Tang Yingxiu Li Chenguang Li Minjie Guo Haiyang Chen Shichen Han Jin Li qijin lou Wenqiang Sun Peng Wang Haifeng Guo Wei Ye Zhanying Zhang Hongliang Zhang Sibin Yu Long Zhang Zichao Li State Key Laboratory of Agrobiotechnology/Beijing Key Laboratory of Crop Genetic Improvement College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing100193 China National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan430070 China College of Plant Protection China Agricultural UniversityBeijing100193 China

Trichomes function in plant defenses against biotic and abiotic stresses;examination of glabrous lines,which lack trichomes,has revealed key aspects of trichome development and *** of allelism in 51 glabrous rice(Oryza sativa)accessions collected worldwide identified OsSPL10 and OsWOX3B as regulators of trichome development in ***,we report that OsSPL10 acts as a transcriptional regulator controlling trichome *** and transient expression analyses revealed that variation in the approximately 700-bp OsSPL10 promoter region is the primary cause of the glabrous phenotype in the indica cultivar *** of OsSPL10 by genome editing decreased leaf trichome density and length in the NIL-HL6 *** with genotype OsSPL10^(WD-17993)/HL6 generated by crossing WD-17993 with NIL-HL6 also had fewer trichomes in the *** LEAF6(HL6)encodes another transcription factor that regulates trichome initiation and elongation,and OsSPL10 directly binds to the HL6 promoter to regulate its ***,the transcript levels of auxin-related genes,such as OsYUCCA5 and OsPIN-FORMED1b,were altered in OsSPL10 overexpression and RNAi transgenic *** tests using locusts(Locusta migratoria)demonstrated that non-glandular trichomes affect feeding by this *** findings provide a molecular framework for trichome development and an ecological perspective on trichome functions.

关键词： auxin complementary genes hairy leaves Oryza sativa OsWOX3B

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Chromosome-level genome of Himalayan yew provides insights into the origin and evolution of the paclitaxel biosynthetic pathway

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Molecular Plant 2021年第7期14卷 1199-1209页

作者： Jian Cheng Xiao Wang Xiaonan Liu Xiaoxi Zhu Zihe Li Huanyu Chu Qian Wang QianQian lou Bijun Cai Yiqun Yang Xiaoyun Lu Kai Peng Dingyu Liu Yuwan Liu Lina Lu Huan Liu Ting Yang qijin Ge Chengcheng Shi Guichun Liu Zhiwei Dong Xun Xu Wen Wang Huifeng Jiang Yanhe Ma Key Laboratory of Systems Microbial Biotechnology Tianjin Institute of Industrial BiotechnologyChinese Academy of SciencesTianjin 300308China National Center of Technology Innovation for Synthetic Biology Tianjin 300308China State Key Laboratory of Agricultural Genomics BGI-ShenzhenShenzhenChina State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Jiaxing Synbiolab Biotechnology Co. Ltd.Jiaxing 314006China University of Chinese Academy of Sciences Beijing 100049China School of Ecology and Environment Northwestern Polytechnical UniversityXi'anShaanxi 710072China

Taxus,commonly known as yew,is a well-known gymnosperm with great ornamental and medicinal *** this study,by assembling a chromosome-level genome of the Himalayan yew(Taxus wallichiana)with 10.9 Gb in 12 chromosomes,we revealed that tandem duplication acts as the driving force of gene family evolution in the yew genome,resulting in the main genes for paclitaxel biosynthesis,*** encoding the taxadiene synthase,P450s,and transferases,being clustered on the same *** tandem duplication may also provide genetic resources for the nature to sculpt the core structure of taxoids at different positions and subsequently establish the complex pathway of paclitaxel by ***,we confirmed that there are two genes in the cluster encoding isoenzymes of a known enzyme in the paclitaxel biosynthetic *** reference genome of the Himalayan yew will serve as a platform for decoding the complete biosynthetic pathway of paclitaxel and understanding the chemodi-versity of taxoids in gymnosperms.

关键词： Taxus genome sequencing tandem duplication paclitaxel biosynthetic pathway gene cluster

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