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leaf morphology Genes SRL1 and RENL1 Co-Regulate Cellulose Synthesis and Affect Rice Drought Tolerance

Rice science 2024年第1期31卷 103-117,I0020-I0022页

作者： LIU Dan ZHAO Huibo WANG Zi’an XU Jing LIU Yiting WANG Jiajia CHEN Minmin LIU Xiong ZHANG Zhihai CEN Jiangsu ZHU Li HU Jiang REN Deyong GAO Zhenyu DONG Guojun ZHANG Qiang SHEN Lan LI Qing QIAN Qian HU Songping ZHANG Guangheng State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Research Center of Plant Functional Genes and Tissue Culture Technology College of Bioscience and BioengineeringJiangxi Agricultural UniversityNanchang 330045China Qian Qian Academician Workstation National Nanfan Research Institute(Sanya)Chinese Academy of Agricultural SciencesSanya 572024China

The morphological development of rice(Oryza sativa L.)leaves is closely related to plant architecture,physiological activities,and ***,it is unclear whether there is a co-regulatory relationship between the morphological development of leaves and adaptation to drought *** this study,a drought-sensitive,roll-enhanced,and narrow-leaf mutant(renl1)was induced from a semi-rolled leaf mutant(srl1)by ethyl methane sulfonate(EMS),which was obtained from Nipponbare(NPB)through ***-based cloning and functional validation showed that RENL1 encodes a cellulose synthase,allelic to NRL1/*** RENL1 mutation resulted in reduced vascular bundles,vesicular cells,cellulose,and hemicellulose contents in cell walls,diminishing the water-holding capacity of *** addition,the root system of the renl1 mutant was poorly developed and its ability to scavenge reactive oxygen species(ROS)was decreased,leading to an increase in ROS after drought ***,genetic results showed that RENL1 and SRL1 synergistically regulated cell wall *** results revealed a theoretical basis for further elucidating the molecular regulation mechanism of cellulose on rice drought tolerance,and provided a new genetic resource for enhancing the synergistic regulation network of plant type and stress resistance,thereby realizing simultaneous improvement of multiple traits in rice.

关键词： cellulose cell wall drought tolerance leaf morphology rice

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Quantitative trait loci analysis of leaf morphology in rice

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Chinese Rice Research Newsletter 2001年第1期9卷 2-4页

作者： LIYangsheng ZHENGXianwu LIShaoqing LIDamo ZHULihuang ChangshaInstofAgriModernization theChineseAcademyofSciencesChangsha410125 InstofGenetics theChineseAcademyofSciencesBeijing100101China

The leaf morphology traits are important componem part of rice ideotype. The present study was conducted with a doubled haploid(DH) population of 117 lines derived from a cross between an indica variety, Zhaiyeqing 8(ZYQ 8) and a japonica variety, Jingxi 17(JX 17). The QTLs responsible for area, perimeter, length, width, and length/width of flag leaf, the second upside-down leaf, and the third upside-down leaf were surveyed and analyzed based on genetic linkage map of 243 molecular markers.

关键词： molecular markers leaf morphology doubled haploid flag leaf

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Characterization and fine mapping of the rice gene OsARVL4 regulating leaf morphology and leaf vein development

Characterization and fine mapping of the rice gene OsARVL4 r...

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2016年全国植物生物学大会

作者： Li Wang Jing Xu Jinqiang Nian Nianwei Shen Kaikai Lai Jiang Hu Dali Zeng Changwei Ge Yunxia Fang Li Zhu Qian Qian Guangheng Zhang State Key Laboratory of Rice Biology China National Rice Research Institute

leaf morphology and chlorophyll content are closely related to the photosynthetic efficiency,which would potentially contribute to crop yield. In this study,we isolated an EMS-mutagenized rice mutant displaying abaxial rolling and vein-albino leaves,and thus designated it as Osarvl4. Compared to the wild type ′Nipponbare′,Osarvl4 mutant had abnormal development of clear cells,parenchyma cells,sclerenchymatous cells,mesophyll cells,bulliform cells and vascular bundles. As a result of the defective leaf development,the chlorophyll content and photosynthetic efficiency were significantly affected in the mutant. Genetic analysis using map-based cloning indicated that the mutation was controlled by a single recessive karyogene localized within a 44 kb region on the long arm of chromosome 4. Sequence analysis and alignment indicated that the three candidate genes in this region showed no difference at the DNA level. However,quantitative realtime PCR analysis showed that the expression of the LOCs04g33580 gene in the mutant was significantly lower than that of wild type,while expression of the other two candidate genes(LOCs04g33560 and LOCs04g33570) exhibited no significant difference. Therefore,we speculate that LOCs04g33580 might be the target gene which regulates leaf vein development and leaf morphogenesis in rice and this locus might be subject to epigenetic regulation,such as DNA methylation,Thus,our finding suggests that the Os ARVL4 gene is involved in the regulation of chlorophyll content and photosynthetic efficiency in plants,and provides a genetic basis for the future study of genes related to leaf development in rice.

关键词： leaf morphology parenchyma cells pleiotropism photosynthetic efficiency

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Deciphering the morpho–physiological traits for high yield potential in nitrogen efficient varieties(NEVs):A japonica rice case study

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Journal of Integrative Agriculture 2022年第4期21卷 947-963页

作者： ZHU Kuan-yu YAN Jia-qian SHEN Yong ZHANG Wei-yang XU Yun-ji WANG Zhi-qin YANG Jian-chang Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou 225009P.R.China Joint International Research Laboratory of Agriculture and Agri-product Safety Ministry of EducationYangzhou UniversityYangzhou 225009P.R.China

The use of nitrogen(N)-efficient rice(Oryza sativa L.) varieties could reduce excessive N input without sacrificing yields. However, the plant traits associated with N-efficient rice varieties have not been fully defined or comprehensively explored. Here, three japonica N-efficient varieties(NEVs) and three japonica N-inefficient varieties(NIVs) of rice were grown in a paddy field under N omission(0 N, 0 kg N ha^(-1)) and normal N(NN, 180 or 200 kg N ha^(-1)) treatments. Results showed that NEVs exhibited higher grain yield and nitrogen use efficiency(NUE) than NIVs under both treatments, due to improved sink size and filled-grains percentage in the former which had higher root oxidation activity and greater root dry weight, root length and root diameter at panicle initiation(PI), as well as higher spikelet-leaf ratio and more productive tillers during the grain-filling stage. Compared with NIVs, NEVs also exhibited enhanced N translocation and dry matter accumulation after heading and improved flag leaf morpho-physiological traits, including greater leaf thickness and specific leaf weight and higher contents of ribulose^(-1),5-bisphosphate carboxylase/oxygenase, chlorophyll, nitrogen, and soluble sugars, leading to better photosynthetic performance. Additionally, NEVs had a better canopy structure, as reflected by a higher ratio of the extinction coefficient for effective leaf N to the light extinction coefficient, leading to enhanced canopy photosynthesis and dry matter accumulation. These improved agronomic and physiological traits were positively and significantly correlated with grain yield and internal NUE, which could be used to select and breed N-efficient rice varieties.

关键词： rice N-efficient varieties nitrogen use efficiency root morpho–physiological traits nitrogen translocation leaf morphology canopy structure

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Higher leaf area through leaf width and lower leaf angle were the primary morphological traits for yield advantage of japonica/indica hybrids

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Journal of Integrative Agriculture 2020年第2期19卷 483-494页

作者： WEI Huan-he YANG Yu-lin SHAO Xing-yu SHI Tian-yi MENG Tian-yao LU Yu TAO Yuan LI Xin-yue DING En-hao CHEN Ying-long DAI Qi-gen Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology Yangzhou UniversityYangzhou 225009P.R.China Joint International Research Laboratory of Agriculture and Agri-Product Safety Ministry of Education of ChinaYangzhou UniversityJiangsu 225009P.R.China

The yield potential of japonica/indica hybrids(JIH)has been achieved over 13.5 t ha–1 in large-scale rice fields,and some physiological traits for yield advantage of JIH over japonica inbred rice(JI)and indica hybrid rice(IH)were also *** date,little attention has been paid to morphological traits for yield advantage of JIH over JI and *** this reason,three JIH,three JI,and three IH were field-grown at East China(Ningbo,Zhejiang Province)in 2015 and *** with JI and IH,JIH had 14.3 and 20.8%higher grain yield,respectively,attributed to its more spikelets per panicle and relatively high percentage of filled *** advantage in spikelets per panicle of JIH over JI and IH was shown in number of grains on the upper,middle,and lower *** with JI and IH,JIH had higher leaf area through leaf width and lower leaf angle of upper three leaves,higher leaf area index and leaf area per tiller at heading and maturity stages,higher stem weight per tiller and K and Si concentrations of stem at maturity,higher dry matter weight in leaf,stem,and panicle at heading and maturity stages,and higher biomass accumulation after heading and lower biomass translocation from stem during *** width of upper three leaves were correlated positively,while leaf angle of upper three leaves were correlated negatively with biomass accumulation after heading,stem weight per tiller,and per unit *** results indicated that the grain yield advantage of JIH was ascribed mainly to the more spikelets per panicle and relatively high percentage of filled *** leaf area through leaf width and more erect leaves were associated with improved biomass accumulation and stem weighing during ripening,and were the primary morphological traits underlying higher grain yield of JIH.

关键词： japonica/indica hybrids plant-type traits leaf morphology

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Morphological and genetic differentiation in isolated populations of Mexican beech Fagus grandifolia ***

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Journal of Forestry Research 2021年第5期32卷 2169-2179页

作者： Dulce María Galván-Hernández Pablo Octavio-Aguilar Luis Lazcano-Cruz Arturo Sánchez-González Population Ecology Laboratory of the Biological Research Center Autonomous University of HidalgoKm 4.5 Pachuca-Tulancingo HighwayCP 42184 Mineral de La ReformaHidalgoMexico Genetic Laboratory of the Biological Research Center Autonomous University of HidalgoKm 4.5 Pachuca-Tulancingo HighwayCP 42184 Mineral de La ReformaHidalgoMexico

Mexican beech[Fagus grandifolia ***(Martinez)***]is a subspecies endemic to the Sierra Madre Oriental Mountains and considered endangered due to the low density of its populations and high degree of habitat fragmentation and environmental *** its morphological and genetic variation is associated with its ability to adapt to changes in environmental conditions,the objective of this study was to determine whether phenotypic and genotypic variation exist,and it relationships with population reduction *** four beech populations in the states of Hidalgo and Veracruz,we analyzed 11 morphological variables for leaves and 6 micros atellite *** morphological variables that to discriminate between populations were related to the size of the leaf,but a robust differentiation pattern was not found,given that independent groups of leaves were *** populations located closest to each other,had greater genetic variation and less genetic distance;populations in the extreme north and south had the lowest genetic *** differentiation among populations was associated with reduction in population *** the 3 localities in Hidalgo,recent bottlenecks were identified,and in Veracruz,an old bottleneck was *** in leaf morphology and genetic structure of Mexican beech populations could be the result of a combination of various geographical,climate and ecological factors.

关键词： Adaptation Bottleneck Genetic structure leaf morphology Mexico Sierra madre oriental

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Biogeographic divergence in leaf traits of Sapindus mukorossi and Sapindus delavayi and its relation to climate

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Journal of Forestry Research 2021年第4期32卷 1445-1456页

作者： Xin Wang Jiming Liu Xue Rui Yuanyuan Xu Guochun Zhao Lixian Wang Xuehuang Weng Zhong Chen Liming Jia Key Laboratory of Silviculture and Conservation of the Ministry of Education College of ForestryBeijing Forestry UniversityBeijing 100083People’s Republic of China Yuanhua Forestry Biological Technology Co. Ltd.Sanming 650216FujianPeople’s Republic of China

To explore differences in leaf morphology between Sapindus mukorossi and Sapindus delavayi,and how the environment might drive these differences,80 germplasm samples from the Sapindus germplasm nursery in Fujian Province were *** study revealed a wide variation and diversity in 16 germplasm traits,both within and between species grown under the same *** average,the relative contribution of intraspecific variability to total variability was more important(83%) than the relative contribution of interspecific variability(17%).PERMANOVA analysis showed differences in leaflet thickness,length,perimeter,length to width ratio,and leaf hairs or trichome *** analyses between leaf morphological traits and environmental variables indicated that leaves tended to be larger,longer,and thicker in wetter,warmer,and low-altitude *** analysis of the relationship between climate and leaf morphology revealed that *** had a greater sensitivity to climate variation,particularly in response to mean temperatures of the coldest and warmest seasons,which led to differences in leaf traits and the distribution of the two *** findings contribute to the understanding of leaf morphology variations in *** and ***,and provide a basis for the collection of Sapindus germplasm resources,their cultivation and use to help address climate change.

关键词： Climate leaf morphology Sapindus delavayi Sapindus mukorossi

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Quantitative Trait Loci Mapping of leaf Morphological Traits and Chlorophyll Content in Cultivated Tetraploid Cotton

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Journal of Integrative Plant Biology 2005年第11期47卷 1382-1390页

作者： Xian-Liang SONG Wang-Zhen GUO Zhi-Guo HAN Tian-Zhen ZHANG State Key Laboratory of Crop Genetics and Germplasm Enhancement Cotton Research Institute Nanjing Agricultural University Nanjing 210095 China Shandong Agricultural University College of Agronomy Taian 271018 China

Genetic mapping provides a powerful tool for quantitative trait loci （QTL） analysis at the molecular level. A simple sequence repeat （SSR） genetic map containing 590 markers and a BCI population from two cultivated tetraploid cotton （Gossypium hirsutum L.） cultivars, namely TM-1 and Hai 7124 （G. barbadense L.）, were used to map and analyze QTL using the composite interval mapping （CIM） method. Thirty one QTLs, 10 for lobe length, 13 for lobe width, six for lobe angle, and two for leaf chlorophyll content, were detected on 15 chromosomes or linkage groups at logarithm of odds （LOD）≥2.0, of which 15 were found for leaf morphology at LOD≥3.0. The genetic effects of the QTL were estimated. These results are fundamental for marker-assisted selection （MAS） of these traits in tetraploid cotton breeding.

关键词： chlorophyll cotton leaf morphology quantitative trait locus mapping simple sequencerepeat.

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Variation for Resistance to Alternaria tenuissima and Potential Structural Mechanism among Different Cultivars of Chrysanthemum morifolium

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Phyton-International Journal of Experimental Botany 2020年第4期89卷 851-859页

作者： Huiyun Li Ye Liu Sumei Chen Jiafu Jiang Aiping Song Weimin Fang Fadi Chen State Key Laboratory of Crop Genetics and Germplasm Enhancement Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsCollege of HorticultureNanjing Agricultural UniversityNanjing210095China

Black spot disease,caused by the necrotrophic fungus Alternaria tenuissima(Fr.)Wiltsh(***),is considered a highly destructive disease of Chrysanthemum(Chrysanthemum morifolium Ramat.).A set of 17 accessions of commercial chrysanthemum cultivars were evaluated for resistance to *** by seedling artificial *** was found that the reaction of the accessions to artificial inoculation ranged from resistant to highly *** varieties of chrysanthemum(‘Zhongshan Taogui’,‘Jinba’,‘Zhongshan Jinguan’,‘Jinling Wanhuang’and‘Jinling Yangguang’)were resistant;two varieties of chrysanthemum(‘Zhongshan Xinggui’and‘Zhongshan Jinkui’)were moderately resistant;and others were susceptible to various degrees,four varieties of chrysanthemum(‘Zhongshan Zihe’,‘Zhongshan Jiuhong’,‘Zaoyihong’and‘Jinling Jiaohuang’)were highly susceptible,*** leaf morphological features of two resistant and two highly susceptible cultivars were further *** density,length,height,gland size and stomata density were found to be associated with plant passive *** varieties that were identified in present study will be promising germplasm for exploitation of breeding programmes aimed at developing ***-resistant cultivars and increasing genetic diversity.

关键词： Alternaria tenuissima commercial chrysanthemum cultivars disease resistance leaf morphology

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Ontogenetic transition in leaf traits: a new cost associated with the increase in leaf longevity

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Journal of Plant Ecology 2014年第6期7卷 567-575页

作者： Sonia Mediavilla Maria Herranz Patricia González-Zurdo Alfonso Escudero Departamento de Ecología Facultad de BiologíaUniversidad de SalamancaSalamanca 37071Spain

Aims Recent work has identified a worldwide‘economics’spectrum of correlated leaf traits that mainly reflects the compromises between maximizing leaf longevity and short-term ***,during the early stages of tree growth different species tend to exhibit a common strategy,because competition for soil water and nutrients forces the maximization of short-term productivity owing to the need for rapid growth during the most vulnerable part of the tree’s life ***,our aim here was to compare the variations that occur during ontogeny in the different leaf traits(morphology and leaf chemical composition)of several coexisting Mediterranean woody species differing in their leaf life spans and to test our hypothesis that tree species with a long leaf life span should exhibit larger shifts in leaf characteristics along *** Six Mediterranean tree species differing in leaf life span,selected from three plots located in central-western Spain,were studied during three growth stages:seedlings,juveniles and mature *** life span,leaf morphology(leaf area,dry weight,thickness and mass per unit area)and chemical composition(N and fibre con-centrations)were measured in all six *** magnitude of the ontogenetic changes in the different traits was estimated and related to the mean leaf longevity of the different *** Findings Along ontogeny,strong changes were observed in all variables *** early growth stages showed lower leaf thickness,leaf thickness and mass per unit area and N,cellulose and hemi-cellulose concentrations than mature trees,but a higher lignin ***,these changes were especially marked in species with a longer leaf life span at *** dif-ferences in leaf life span,leaf morphology and chemical com-position were stronger at the mature stage than at the seedling *** conclude that greater plasticity and more intense strat-egy shifts along ontogeny are necessarily associ

关键词： leaf morphology leaf N concentration fibre content Pinus Quercus tree age class

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