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OsHAL3, a Blue Light-Responsive Protein, Interacts with the Floral Regulator Hdl to Activate Flowering in Rice

Molecular Plant 2016年第2期9卷 233-244页

作者： Lei Su jun-xiang shan Ji-Ping Gao Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics and Development Shanghai Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences 300 Fenglin Road Shanghai 200032 China

In flowering plants, photoperiodic flowering is controlled by a complicated network. Light is one of the most important environmental stimuli that control the timing of the transition from vegetative growth to reproductive development. Several photoreceptors, including PHYA, PHYB, CRY2, and FKF1 in Arabi- dopsis and their homologs （OsPHYA, OsPHYB, OsPHYC, and OsCRY2） in rice, have been identified to be related to flowering. Our previous study suggests that OsHAL3, a flavin mononucleotide-binding protein, may function as a blue-light sensor. Here, we report the identification of OsHAL3 as a positive regulator of flowering in rice. OsHAL3 overexpression lines exhibited an early flowering phenotype, whereas down- regulation of OsHAL3 expression by RNA interference delayed flowering under an inductive photoperiod （short-day conditions）. The change in flowering time was not accompanied by altered I-Idl expression but rather by reduced accumulation of Hd3a and MADS14 transcripts. OsHAL3 and Hdl colocalized in the nucleus and physically interacted in vivo under the dark, whereas their interaction was inhibited by white or blue light. Moreover, OsHAL3 directly bound to the promoter of Hd3a, especially before dawn. We conclude that OsHAL3, a novel light-responsive protein, plays an essential role in photoperiodic control of flowering time in rice, which is probably mediated by forming a complex with Hdl. Our findings open up new perspectives on the photoperiodic flowering pathway.

关键词： Oryza sativa photoperiodic flowering blue-light-responsive protein OsHAL3 Hdl

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Tillering and small grain 1 dominates the tryptophan aminotransferase family required for local auxin biosynthesis in rice

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Journal of Integrative Plant Biology 2020年第5期62卷 581-600页

作者： Tao Guo Ke Chen Nai-Qian Dong Wang-Wei Ye jun-xiang shan Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics&DevelopmentShanghai Institute of Plant Physiology&EcologyShanghai Institute for Biological SciencesChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of Sciences Beijing 100049China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China

Auxin is a crucial phytohormone,controlling multiple aspects of plant growth and responses to the changing ***,the role of local auxin biosynthesis in specific developmental programs remains unknown in *** study characterized the rice tillering and small grain 1(tsg1)mutant,which has more tillers but a smaller panicle and grain size resulting from a reduction in endogenous ***1 encodes a tryptophan aminotransferase that is allelic to the FISH BONE(FIB)*** tsg1 mutant showed hypersensitivity to indole-3-acetic acid and the competitive inhibitor of aminotransferase,***1 knockout resulted in an increased tiller number but reduction in grain number and size,and decrease in ***,deletion of the TSG1 homologs OsTAR1,Os TARL1,and OsTARL2 caused no obvious changes,although the phenotype of the TSG1/Os TAR1 double mutant was intensified and infertile,suggesting gene redundancy in the rice tryptophan aminotransferase ***,TSG1 and Os TAR1,but not Os TARL1 and OsTARL2,displayed marked aminotransferase ***,subcellular localization was identified as the endoplasmic reticulum,while phylogenetic analysis revealed functional divergence of TSG1 and OsTAR1 from OsTARL1 and *** findings suggest that TSG1 dominates the tryptophan aminotransferase family,playing a prominent role in local auxin biosynthesis in rice.

关键词： grain local auxin

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Identification of Quantitative Trait Loci for Lipid Metabolism in Rice Seeds

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Molecular Plant 2012年第4期5卷 865-875页

作者： Jie-Zheng Ying jun-xiang shan Ji-Ping Gao Mei-Zhen Zhu Min Shi Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research(shanghai) Shanghai Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesThe Chinese Academy of SciencesGraduate School of the Chinese Academy of Sciences300 Fenglin RoadShanghai 200032China National Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China

Plant seed oil is important for human dietary consumption and industrial application. The oil trait is controlled by quantitative trait loci （QTLs）, but no QTLs for fatty acid composition are known in rice, the monocot model plant. QTL analysis was performed using F2 and F2：3 progeny from a cross of an indica variety and a japonica variety. Gas chroma- tography-mass spectrometry （GC-MS） analysis revealed significant differences between parental lines in fatty acid com- position of brown rice oil, and 29 associated QTLs in F2 and/or F2：3 populations were identified throughout the rice genome, except chromosomes 9 and 10. Eight QTLs were repeatedly identified in both populations across different envi- ronments. Five loci pleiotropically controlled different traits, contributing to complex interactions of oil with fatty acids and between fatty acids. Nine rice orthologs of Arabidopsis genes encoding key enzymes in lipid metabolism co-localized with 11 mapped QTLs. A strong QTL for oleic （18：1） and linoleic （18：2） acid were associated with a rice ortholog of a gene encoding acyI-CoA：diacylglycerol acyltransferase （DGAT）, and another for palmitic acid （16：0） mapped similarly to the acyl- ACP thioesterase （FatB） gene ortholog. Our approach rapidly and efficiently identified candidate genes for mapped QTLs controlling fatty acid composition and oil concentration, providing information for improving rice grain quality by marker assisted selection.

关键词： Rice fatty acid seed oil lipid metabolism QTL.

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Dissecting the Genetic Basis of Extremely Large Grain Shape in Rice Cultivar 'JZ1560'

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Journal of Genetics and Genomics 2012年第7期39卷 325-333页

作者： Jie-Zheng Ying Ji-Ping Gao jun-xiang shan Mei-Zhen Zhu Min Shi Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research(shanghai) Shanghai Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of Sciences300 Fenglin RoadShanghai 200032China National Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006China

Rice grain shape, grain length （GL）, width （GW）, thickness （GT） and length-to-width ratio （LWR）, are usually controlled by multiple quantitative trait locus （QTL）. To elucidate the genetic basis of extremely large grain shape, QTL analysis was performed using an F2 population derived from a cross between a japonica cuttivar ＇JZI560＇（extremely large grain） and a contrasting indica cultivar ＇FAZI＇（small grain）. A total number of 24 QTLs were detected on seven different chromosomes. QTLs for GL, GW, GT and LWR explained 11.6%, 95.62%, 91.5% and 89.9% of total phenotypic variation, respectively. Many QTLs pleiotropically controlled different grain traits, contributing complex traits correlation. GW2 and qSW5/GW5, which have been cloned previously to control GW, showed similar chromosomal locations with qGW2-1/qGT2-1/qLWR2-2 and qGW5-2/qLWR5-1 and should be the right candidate genes. Plants pyramiding GW2 and qSW5/GW5 showed a significant increase in GW compared with those carrying one of the two major QTLs. Furthermore, no significant QTL interaction was observed between GW2 and qSW5/GW5. These results suggested that GW2 and qSW5/GW5 might work in independent pathways to regulate grain traits. ＇JZ1560＇ alleles underlying all QTLs contributed an increase in GW and GT and the accumulation of additive effects generates the extremely large grain shape in ＇JZ1560＇.

关键词： Rice Quantitative trait locus Additive effect Grain shape

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Genetic and Physiological Analysis of a Novel Type of Interspecific Hybrid Weakness in Rice

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Molecular Plant 2013年第3期6卷 716-728页

作者： Chen Chen Hao Chen jun-xiang shan Mei-Zhen Zhu Min Shi Ji-Ping Gao Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics and National Center for Plant Gene Research (shanghai) Shanghai Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences 300 Fenglin Road Shanghai 200032 China

Hybrid weakness is an important reproductive barrier that hinders genetic exchange between different species at the post-zygotic stage. However, our understanding of the molecular mechanisms underlying hybrid weakness is limited. In this study, we report discovery of a novel interspecific hybrid weakness in a rice chromosome segment substitution line （CSSL） library derived from a cross between the indica variety Teqing （Oryza sativa） and common wild rice （O. rufipogon）. The dominant Hybrid weakness il （Hwil） gene from wild rice is genetically incompatible with Teqing and induced a set of weakness symptoms, including growth suppression, yield decrease, impaired nutrient absorption, and the retardation of crown root initiation. Phytohormone treatment showed that salicylic acid （SA） could restore the height of plants expressing hybrid weakness, while other phytohormones appear to have little effect. Fine mapping indicated that Hwil is located in a tandem leucine-rich repeat receptor-like kinase （LRR-RLK） gene cluster. Within the 13.2-kb candidate region on the short arm of chromosome 11, there are two annotated LRR-RLK genes, LOC_Osllg07230 and LOC_Osllg07240. The Teqing allele of LOCOsllg07230 and the wild rice allele of LOC_Osllg07240 encode predicted functional proteins. Based on the genetic inheritance of hybrid weakness, LOC_Osllg07240 is implicated as the candidate gene for Hwil. Functional analysis of Hwil will expand our knowledge of the regulation of hybrid weakness in rice.

关键词： Functional genomics genetics rice.

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Anα/βhydrolase family member negatively regulates salt tolerance but promotes flowering through three distinct functions in rice

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Molecular Plant 2022年第12期15卷 1908-1930页

作者： You-Huang xiang Jia-jun Yu Ben Liao jun-xiang shan Wang-Wei Ye Nai-Qian Dong Tao Guo Yi Kan Hai Zhang Yi-Bing Yang Ya-Chao Li Huai-Yu Zhao Hong-Xiao Yu Zi-Qi Lu Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics&DevelopmentShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China University of the Chinese Academy of Sciences Beijing 100049China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China

Ongoing soil salinization drastically threatens crop growth,development,and yield *** is therefore crucial that we improve salt tolerance in rice by exploiting natural genetic ***,many salt-responsive genes confer undesirable phenotypes and therefore cannot be effectively applied to practical agricultural *** this study,we identified a quantitative trait locus for salt tolerance from the African rice species Oryza glaberrima and named it as Salt Tolerance and Heading Date 1(STH1).We found that STH1 regulates fatty acid metabolic homeostasis,probably by catalyzing the hydrolytic degradation of fatty acids,which contributes to salt ***,we demonstrated that STH1 forms a protein complex with D3 and a vital regulatory factor in salt tolerance,OsHAL3,to regulate the protein abundance of OsHAL3 via the 26S proteasome ***,we revealed that STH1 also serves as a co-activator with the floral integrator gene Heading date 1 to balance the expression of the florigen gene Heading date 3a under different circumstances,thus coordinating the regulation of salt tolerance and heading ***,the allele of STH1 associated with enhanced salt tolerance and high yield is found in some African rice accessions but barely in Asian *** of the STH1HP46 allele from African rice into modern rice cultivars is a desirable approach for boosting grain yield under salt ***,our discoveries not only provide conceptual advances on the mechanisms of salt tolerance and synergetic regulation between salt tolerance and flowering time but also offer potential strategies to overcome the challenges resulted from increasingly serious soil salinization that many crops are facing.

关键词： rice salt tolerance flowering time grain yield fatty acid

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Translational Regulation of Plant Response to High Temperature by a Dual-Function tRNAHls Guanylyltransferase in Rice

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Molecular Plant 2019年第8期12卷 1123-1142页

作者： Ke Chen Tao Guo Xin-Min Li Yi-Min Zhang Yi-Bing Yang Wang-Wei Ye Nai-Qian Dong Chuan-Lin Shi Yi Kan You-Huang xiang Hai Zhang Ya-Chao Li Ji-Ping Gao Xuehui Huang Qiang Zhao Bin Han jun-xiang shan Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Centre for Excellence in Molecular Plant Sciences and Collaborative Innovation Center of Genetics & DevelopmentShanghai Institute of Plant Physiology & EcologyShanghai Institute for Biological SciencesChinese Academic of SciencesShanghai 200032China University of the Chinese Academy of Sciences Beijing 100049China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China National Center for Gene Research CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200233China College of Life and Environmental Sciences Shanghai Normal UniversityShanghai 200234China

As sessile organisms,plants have evolved numerous strategies to acclimate to changes in environmental ***,the molecular basis of this acclimation remains largely *** this study we identified a tRNAHis guanylyltransferase,AET1,which contributes to the modification of pre-tRNAH,s and is required for normal growth under high-temperature conditions in ***,AET1 possibly interacts with both RACK1A and elF3h in the endoplasmic ***,AET1 can directly bind to OsARF mRNAs including the uORFs of OsARF19 and OsARF23,indicating that AET1 is associated with translation ***,polysome profiling assays suggest that the translational status remains unaffected in the aet1 mutant,but that the translational efficiency of OsARF19 and OsARF23 is reduced;moreover,OsARF23 protein levels are obviously decreased in the aet1 mutant under high temperature,implying that AET1 regulates auxin signaling in response to high *** provide new insights into the molecular mechanisms whereby AET1 regulates the environmental temperature response in rice by playing a dual role in tRNA modification and translational control.

关键词： rice translation regulation tRNA modification auxin signaling environmental temperature

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A QTL GN1.1, encoding FT-L1, regulates grain number and yield by modulating polar auxin transport in rice

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Journal of Integrative Plant Biology 2024年第10期66卷 2158-2174页

作者： Huai-Yu Zhao jun-xiang shan Wang-Wei Ye Nai-Qian Dong Yi Kan Yi-Bing Yang Hong-Xiao Yu Zi-Qi Lu Shuang-Qin Guo Jie-Jie Lei Ben Liao Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of Sciences Beijing 100049China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China

Rice grain number is a crucial agronomic trait impacting yield. In this study, we characterized a quantitative trait locus(QTL), GRAIN NUMBER 1.1(GN1.1), which encodes a Flowering Locus T-like1(FT-L1) protein and acts as a negative regulator of grain number in rice. The elite allele GN1.1^(B),derived from the Oryza indica variety, BF3-104,exhibits a 14.6% increase in grain yield compared with the O. japonica variety, Nipponbare, based on plot yield tests. We demonstrated that GN1.1 interacted with and enhanced the stability of ADP-ribosylation factor(Arf)-GTPase-activating protein(Gap), OsZAC. Loss of function of OsZAC results in increased grain number. Based on our data, we propose that GN1.1^(B)facilitates the elevation of auxin content in young rice panicles by affecting polar auxin transport(PAT) through interaction with OsZAC. Our study unveils the pivotal role of the GN1.1 locus in rice panicle development and presents a novel, promising allele for enhancing rice grain yield through genetic improvement.

关键词： auxin GN1.1 grain number OsZAC QTL mapping

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A TT1–SCE1 module integrates ubiquitination and SUMOylation to regulate heat tolerance in rice

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Molecular Plant 2024年第12期17卷 1899-1918页

作者： Hong-Xiao Yu Ying-Jie Cao Yi-Bing Yang jun-xiang shan Wang-Wei Ye Nai-Qian Dong Yi Kan Huai-Yu Zhao Zi-Qi Lu Shuang-Qin Guo Jie-Jie Lei Ben Liao Hong-Xuan Lin National Key Laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China University of the Chinese Academy of Sciences Beijing 100049China Joint Center for Single Cell Biology School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China These authors contributed equally to this article

Heat stress poses a significant threat to grain *** anα2 subunit of the 26S proteasome,TT1 has been shown to act as a critical regulator of rice heat ***,the heat tolerance mechanisms mediated by TT1 remain *** this study,we unveiled that small ubiquitin-like modifier(SUMO)-conjugating enzyme 1(SCE1),which interacts with TT1 and acts as a downstream component of TT1,is engaged in TT1-mediated 26S proteasome *** showed that SCE1 functions as a negative regulator of heat tolerance in rice,which is associated with its ubiquitination ***,we observed that small heat-shock proteins(sHSPs)such as Hsp24.1 and Hsp40 can undergo SUMOylation mediated by SCE1,leading to increased accumulation of sHSPs in the absence of *** protein levels of SCE1 significantly enhanced grain yield under high-temperature stress by improving seed-setting rate and rice grain filling *** together,these results uncover the critical role of SCE1 in the TT1-mediated heat tolerance pathway by regulating the abundance of sHSPs and SUMOylation,and ultimately modulating rice heat *** findings underscore the great potential of the TT1–SCE1 module in improving the heat tolerance of crops.

关键词： rice heat tolerance ubiquitination SUMOylation heat-shock protein

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A preliminary study on the loss of heterozygosity at 17p13 in gastric and colorectal cancers

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World Journal of Gastroenterology 1997年第3期3卷 32-34页

作者： WU Guo jun 1, shan xiang Nian 2, LI Ming Fa 2, SHI Shao Lin 1, ZHENG Qi Ping 1, YU Long 1 and ZHAO Shou Yuan 1

Ａｐｒｅｌｉｍｉｎａｒｙｓｔｕｄｙｏｎｔｈｅｌｏｓｓｏｆｈｅｔｅｒｏｚｙｇｏｓｉｔｙａｔ１７ｐ１３ｉｎｇａｓｔｒｉｃａｎｄｃｏｌｏｒｅｃｔａｌｃａｎｃｅｒｓＷＵＧｕｏＪｕｎ１，ＳＨＡＮＸｉａｎｇＮｉａｎ２，ＬＩＭ... 详细信息

Ａｐｒｅｌｉｍｉｎａｒｙｓｔｕｄｙｏｎｔｈｅｌｏｓｓｏｆｈｅｔｅｒｏｚｙｇｏｓｉｔｙａｔ１７ｐ１３ｉｎｇａｓｔｒｉｃａｎｄｃｏｌｏｒｅｃｔａｌｃａｎｃｅｒｓＷＵＧｕｏＪｕｎ１，ＳＨＡＮＸｉａｎｇＮｉａｎ２，ＬＩＭｉｎｇＦａ２，ＳＨＩＳｈａｏＬ...

关键词： stomach neoplasms colorectal neoplasms p53 gene heterozygosity loss genes, suppressor, tumor

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