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comparative transcriptome analysis between abundant and deficient spore strains provides novel insight into gene regulatory networks and mechanisms of monospore production in bladed Bangiales

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渔业学报（英文） 2023年第2期8卷 124-134页

作者： Qingjie Zhang Shanshan Song Dahai Gao Xinghong Yan Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Shanghai Ocean UniversityMinistry of EducationShanghai201306China National Demonstration Center for Experimental Fisheries Science Education Shanghai Ocean UniversityShanghai201306China Shanghai Engineering Research Center of Aquaculture Shanghai201306China

As an important seedling source,monospores closely associate with yields in nori ***,the molecular mechanism underlying differences in monospore production for different strains remains *** transcriptome analysis was performed to examine gene expression differences between the spore abundant wild-type strain(WT)and spore deficient mutant(Y1)of Pyropia *** WT strain that produces monospores in abundance exhibited more differentially expressed genes(DEGs)in both number and higher fold-changes than the Y1 strain incapable of producing monospores,indicating that the specific regulation of genes is involved in monospore *** lists of DEGs were obtained between the two strains using intersection and displayed in Venn diagram:one expressed only in WT strain,another expressed only in Y1 strain,and the third shared in both *** annotated as homologous genes of Arabidopsis thaliana in these 3 lists were curated for online functional enrichment analysis on Metascape *** regulatory networks of WT were functionally enriched in the processing,proteolysis,and transport of proteins,especially within the small GTPase protein family,which might be account for the monospore production ability,whereas Y1 were functionally enriched in the metabolism of essential substance and utilization of indispensable energy,which might be account for the rapid growth of *** found the differentially enriched gene regulatory networks between strains might be the intrinsic mechanisms of the different monospore production *** findings provide novel insights into the genes and regulatory networks associated with monospore production abilities,which are essential for developing accurate breeding technologies for optimal release of monospores and increase of total nori production.

关键词： Pyropia chauhanii Monospore Archeospore comparative transcriptome Gene regulatory network

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comparative transcriptomic analysis of Rosa sterilis inflorescence branches with different trichome types reveals an R3-MYB transcription factor that negatively regulates trichome formation

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Journal of Integrative Agriculture 2022年第10期21卷 2926-2942页

作者： MA Wen-tao LU Min AN Hua-ming YI Yin Guizhou Engineering Research Center for Fruit Crops Agricultural CollegeGuizhou UniversityGuiyang 550025P.R.China Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education) Institute of Agro-bioengineeringCollege of Life ScienceGuizhou UniversityGuiyang 550025P.R.China Key Laboratory of Plant Physiology and Development Regulation Guizhou Normal UniversityGuiyang 550025P.R.China

Rosa sterilis *** is an important economic tree in China that produces fruits with high nutritional and medicinal *** of ***’organs are covered with different types of trichomes or prickles that directly affect fruit appearance and plant *** study used RNA sequencing technology to analyze the transcriptomes of two parts of the inflorescence branch,namely inflorescence stems with flagellated trichomes and pedicels with both flagellated and glandular *** transcriptomic analysis showed that many transcription factors(TFs)are potentially involved in the formation and development of *** accumulation of RsETC1,a TF of the R3-MYB family,was significantly higher in inflorescence stems than in pedicels;quantitative reverse transcription PCR(qRTPCR)verified that its expression was significantly higher in inflorescence stems than in pedicels during the first three development stages,indicating its inhibitory action on the initiation of glandular trichomes in *** mRNA level of RsETC1 accumulated to significantly higher levels in trichomeless tissues than in tissues with trichromes,suggesting that this gene may inhibit the formation of trichomes in ***-expression of RsETC1 in Arabidopsis resulted in glabrous phenotypes,and the expression of trichome-related endogenous genes,except for TTG1,was markedly *** addition,the contents of the phytohormones jasmonic acid(JA),gibberellin A3(GA_(3)),and cytokinins(CKs)in pedicels were significantly higher than those in inflorescence stems,and the expression patterns of the genes related to hormone biosynthesis and signal transduction presented consistent responses,suggesting that the transduction of these hormones might be crucial for trichome initiation and *** data provide a new perspective for revealing the molecular mechanism of trichome formation in ***.

关键词： comparative transcriptome inflorescence stem pedicels R3-MYB transcription factor trichome

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