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植物学报（英文版）
植物学报（英文版）

刘春明

月刊

1672-9072

jipb@ibcas.ac.cn

010-62836133，010-62836563

100093

北京香山南辛村20号中科院植物所内

植物学报（英文版）/Journal Journal of Integrative Plant BiologyCSCDCSTPCD北大核心SCI
查看更多>>本学报是植物学综合性学术期刊。国外发行与交换达40多个国家和地区。国际标准A4大16开铜版纸印刷。本学报力争全面反映我国植物科学的最新研究成果，关注国际热点、新的学科生长点、前沿研究课题，重视报道重要的应用基础研究。主要栏目有植物生理生化、植物遗传学和分子生物学、植物生殖生物学、结构植物学、植物化学与资源植物学、植物系统与进化、植物生态学、古植物学的原始研究论文、综述和快讯。
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    Population genomics highlights structural variations in local adaptation to saline coastal environments in woolly grape

    Tianhao ZhangWenjing PengHua XiaoShuo Cao...
    1408-1426页
    查看更多>>摘要：Structural variations(SVs)are a feature of plant genomes that has been largely unexplored despite their significant impact on plant phenotypic traits and local adaptation to abiotic and biotic stress.In this study,we employed woolly grape(Vitis re-tordii),a species native to the tropical and sub-tropical regions of East Asia with both coastal and inland habitats,as a valuable model for examining the impact of SVs on local adaptation.We as-sembled a haplotype-resolved chromosomal ref-erence genome for woolly grape,and conducted population genetic analyses based on whole-genome sequencing(WGS)data from coastal and inland populations.The demographic analyses revealed recent bottlenecks in all populations and asymmetric gene flow from the inland to the coastal population.In total,1,035 genes asso-ciated with plant adaptive regulation for salt stress,radiation,and environmental adaptation were detected underlying local selection by SVs and SNPs in the coastal population,of which 37.29％and 65.26％were detected by SVs and SNPs,respectively.Candidate genes such as FSD2,RGA1,and AAP8 associated with salt toler-ance were found to be highly differentiated and selected during the process of local adaptation to coastal habitats in SV regions.Our study highlights the importance of SVs in local adaptation;candi-date genes related to salt stress and climatic adaptation to tropical and subtropical environ-ments are important genomic resources for future breeding programs of grapevine and its rootstocks.
      原文链接:
    • 维普
    • 万方数据

    An orchestrated ethylene-gibberellin signaling cascade contributes to mesocotyl elongation and emergence of rice direct seeding∞

    Yusong LyuXinli DongShipeng NiuRuijie Cao...
    1427-1439页
    查看更多>>摘要：A mechanized direct seeding of rice with less labor and water usage,has been widely adopted.However,this approach requires varieties that exhibit uniform seedling emergence.Mesocotyl elongation(ME)offers the main drive of fast emergence of rice seedlings from soils;never-theless,its genetic basis remains unknown.Here,we identify a major rice quantitative trait locus Mesocotyl Elongation1(qME1),an allele of the Green Revolution gene Semi-Dwarf 1(SD1),en-coding GA20-oxidase for gibberellin(GA)bio-synthesis.ME1 expression is strongly induced by soil depth and ethylene.When rice grains are direct-seeded in soils,the ethylene core signaling factor OsEIL1 directly promotes ME1 tran-scription,accelerating bioactive GA biosynthesis.The GAs further degrade the DELLA protein SLENDER RICE 1(SLR1),alleviating its inhibition of rice PHYTOCHROME-INTERACTING FACTOR-LIKE13(OsPIL13)to activate the downstream expansion gene OsEXPA4 and ultimately pro-mote rice seedling ME and emergence.The an-cient traits of long mesocotyl and strong emer-gence ability in wild rice and landrace were gradually lost in company with the Green Revo-lution dwarf breeding process,and an elite ME1-R allele(D349H)is found in some modern Geng varieties(long mesocotyl lengths)in northern China,which can be used in the direct seeding and dwarf breeding of Geng varieties.Fur-thermore,the ectopic and high expression of ME1 driven by mesocotyl-specific promoters re-sulted in rice plants that could be direct-seeded without obvious plant architecture or yield pen-alties.Collectively,we reveal the molecular mechanism of rice ME,and provide useful in-formation for breeding new Green Revolution varieties with long mesocotyl suitable for direct-seeding practice.
      原文链接:
    • 万方数据

    Natural variation in MORE GRAINS 1 regulates grain number and grain weight in rice∞

    Yingchun HanQianfeng HuNuo GongHuimin Yan...
    1440-1458页
    查看更多>>摘要：Grain yield is determined mainly by grain number and grain weight.In this study,we identified and characterized MORE GRAINS1(MOG1),a gene associated with grain number and grain weight in rice(Oryza sativa L.),through map-based cloning.Overexpression of MOG1 increased grain yield by 18.6％-22.3％under field conditions.We de-termined that MOG1,a bHLH transcription factor,interacts with OsbHLH107 and directly activates the expression of LONELY GUY(LOG),which encodes a cytokinin-activating enzyme and the cell expansion gene EXPANSIN-LIKE1(EXPLA1),positively regu-lating grain number per panicle and grain weight.Natural variations in the promoter and coding re-gions of MOG1 between Hap-LNW and Hap-HNW alleles resulted in changes in MOG1 expression level and transcriptional activation,leading to functional differences.Haplotype analysis revealed that Hap-HNW,which results in a greater number and heavier grains,has undergone strong selection but has been poorly utilized in modem lowland rice breeding.In summary,the MOG1-OsbHLH107 complex acti-vates LOG and EXPLA1 expression to promote cell expansion and division of young panicles through the cytokinin pathway,thereby increasing grain number and grain weight.These findings suggest that Hap-HNW could be used in strategies to breed high-yielding temperate japonica lowland rice.
      原文链接:
    • 万方数据

    OsATL32 ubiquitinates the reactive oxygen species-producing OsRac5-OsRbohB module to suppress rice immunity

    Yuqing YanHui WangYan BiJiajing Wang...
    1459-1480页
    查看更多>>摘要：Ubiquitination-mediated protein degradation is integral to plant immunity,with E3 ubiquitin li-gases acting as key factors in this process.Here,we report the functions of OsATL32,a plasma membrane-localized Arabidopsis Tóxicos En Le-vadura(ATL)-type E3 ubiquitin ligase,in rice(Oryza sativa)immunity and its associated regu-latory network.We found that the expression of OsATL32 is downregulated in both compatible and incompatible interactions between rice and the rice blast fungus Magnaporthe oryzae.The OsATL32 protein level declines in response to in-fection by a compatible M.oryzae strain or to chitin treatment.OsATL32 negatively regulates rice resistance to blast and bacterial leaf blight diseases,as well as chitin-triggered immunity.Biochemical and genetic studies revealed that OsATL32 suppresses pathogen-induced reactive oxygen species(ROS)accumulation by mediating ubiquitination and degradation of the ROS-producing OsRac5-OsRbohB module,which en-hances rice immunity against M.oryzae.The pro-tein phosphatase PHOSPHATASE AND TENSIN HOMOLOG enhances rice blast resistance by dephosphorylating OsATL32 and promoting its degradation,preventing its negative effect on rice immunity.This study provides insights into the molecular mechanism by which the E3 ligase OsATL32 targets a ROS-producing module to un-dermine rice immunity.
      原文链接:
    • 维普
    • 万方数据

    A vicinal oxygen chelate protein facilitates viral infection by triggering the unfolded protein response in Nicotiana benthamiana

    Zhihong GuoNing JiangtMenglin LiHongfang Guo...
    1481-1499页
    查看更多>>摘要：Vicinal oxygen chelate(VOC)proteins are members of an enzyme superfamily with dioxygenase or non-dioxygenase activities.However,the biological functions of VOC proteins in plants are poorly un-derstood.Here,we show that a VOC in Nicotiana benthamiana(NbVOC1)facilitates viral infection.NbVOC1 was significantly induced by infection by beet necrotic yellow vein virus(BNYW).Transient overexpression of NbVOC1 or its homolog from Beta vulgaris(BvVOC11)enhanced BNYW infection in N.benthamiana,which required the nuclear localization of VOC1.Consistent with this result,overexpressing NbVOC1 facilitated BNYW in-fection,whereas,knockdown and knockout of NbVOC1 inhibited BNYW infection in transgenic N.benthamiana plants.NbVOC1 interacts with the basic leucine zipper transcription factors bZIP17/28,which enhances their self-interaction and DNA binding to the promoters of unfolded protein re-sponse(UPR)-related genes.We propose that bZIP17/28 directly binds to the NbVOC1 promoter and induces its transcription,forming a positive feedback loop to induce the UPR and facilitating BNYW infection.Collectively,our results demon-strate that NbVOC1 positively regulates the UPR that enhances viral infection in plants.
      原文链接:
    • 维普
    • 万方数据

    Sporophytic control of tapetal development and pollen fertility by a mitogen-activated protein kinase cascade in rice

    Jianguo ZengManman DuanYiqing WangGuangtao Li...
    1500-1516页
    查看更多>>摘要：Tapetum,the innermost layer of the anther wall,provides essential nutrients and materials for pollen development.Timely degradation of anther tapetal cells is a prerequisite for normal pollen development in flowering plants.Tapetal cells facilitate male gametogenesis by providing cellular contents after highly coordinated programmed cell death(PCD).Tapetal development is regulated by a transcrip-tional network.However,the signaling pathway(s)involved in this process are poorly understood.In this study,we report that a mitogen-activated protein kinase(MAPK)cascade composed of OsYDA1/OsYDA2-OsMKK4-OsMPK6 plays an important role in tapetal development and male gametophyte fer-tility.Loss of function of this MAPK cascade leads to anther indehiscence,enlarged tapetum,and aborted pollen grains.Tapetal cells in osmkk4 and osmpk6 mutants exhibit an increased presence of lipid body-like structures within the cytoplasm,which is ac-companied by a delayed occurrence of PCD.Ex-pression of a constitutively active version of OsMPK6(CA-OsMPK6)can rescue the pollen de-fects in osmkk4 mutants,confirming that OsMPK6 functions downstream of OsMKK4 in this pathway.Genetic crosses also demonstrated that the MAPK cascade sporophyticly regulates pollen develop-ment.Our study reveals a novel function of rice MAPK cascade in plant male reproductive biology.
      原文链接:
    • 维普
    • 万方数据

    AtRKD5 inhibits the parthenogenic potential mediated by AtBBM

    Qiyan LiuDongfen HanDenghu ChengJinfan Chen...
    1517-1531页
    查看更多>>摘要：Parthenogenesis,the development of unfertilized egg cells into embryos,is a key component of apomixis.AtBBM(BABY BOOM),a crucial regulator of embryogenesis in Arabidopsis,possesses the capacity to shift nutritional growth toward re-productive growth.However,the mechanisms un-derlying AtBBM-induced parthenogenesis remain largely unexplored in dicot plants.Our findings re-vealed that in order to uphold the order of sexual reproduction,the embryo-specific promoter activity of AtBBM as well as repressors that inhibit its ex-pression in egg cells combine to limiting its ability to induce parthenogenesis.Notably,AtRKD5,a RWP-RK domain-containing(RKD)transcription factor,binds to the 3'end of AtBBM and is identified as one of the inhibitory factors for AtBBM expression in the egg cell.In the atrkd5 mutant,we success-fully achieved enhanced ectopic expression of AtBBM in egg cells,resulting in the generation of haploid offspring via parthenogenesis at a rate of 0.28％.Furthermore,by introducing chimeric Arabidopsis and rice BBM genes into the egg cell,we achieved a significant 4.6-fold enhance-ment in haploid induction through the atdmp8/9 mutant.These findings lay a strong foundation for further exploration of the BBM-mediated partheno-genesis mechanism and the improvement of hap-loid breeding efficiency mediated by the dmp8/9 mutant.
      原文链接:
    • 维普
    • 万方数据