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A Golden2-like transcription factor, BnGLK1a, improves chloroplast development, photosynthesis, and seed weight in rapeseed

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Journal of Integrative Agriculture 2024年第5期23卷 1481-1493页

作者： Qianwei zhang Yuanyi Mao Zikun Zhao Xin Hu Ran Hu Nengwen Yin Xue Sun Fujun Sun Si Chen Yuxiang jiang Liezhao Liu Kun Lu Jiana Li Yu Pan Integrative Science Center of Germplasm Creation in Western China(Chongqing)Science City Southwest UniversityChongqing 400715China Academy of Agricultural Sciences Southwest UniversityChongqing 400715China Engineering Research Center of South Upland Agriculture Ministry of EducationChongqing 400715China Key Laboratory of Horticulture Science for Southern Mountainous Regions Ministry of Education/College of Horticulture and Landscape ArchitectureSouthwest UniversityChongqing 400715China

Enhancing photosynthetic efficiency is a major goal for improving crop yields under agricultural field conditions and is associated with chloroplast biosynthesis and development.In this study,we demonstrate that Golden2-like 1a(BnGLK1a)plays an important role in regulating chloroplast development and photosynthetic efficiency.Overexpressing BnGLK1a resulted in significant increases in chlorophyll content,the number of thylakoid membrane layers and photosynthetic efficiency in Brassica napus,while knocking down BnGLK1a transcript levels through RNA interference(RNAi)had the opposite effects.A yeast two-hybrid screen revealed that BnGLK1a interacts with the abscisic acid receptor PYRABACTIN RESISTANCE 1-LIKE 1-2(BnPYL1-2)and CONSTITUTIVE PHOTOMORPHOGENIC 9 SIGNALOSOME 5A subunit(BnCSN5A),which play essential roles in regulating chloroplast development and photosynthesis.Consistent with this,BnGLK1a-RNAi lines of B.napus display hypersensitivity to the abscisic acid(ABA)response.Importantly,overexpression of BnGLK1a resulted in a 10%increase in thousand-seed weight,whereas seeds from BnGLK1a-RNAi lines were 16%lighter than wild type.We propose that BnGLK1a could be a potential target in breeding for improving rapeseed productivity.Our results not only provide insights into the mechanisms of BnGLK1a function,but also offer a potential approach for improving the productivity of Brassica species.

关键词： Brassica napus BnGLK1a chloroplast development photosynthetic efficiency yield

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photosynthetic Diurnal Variation of Soybean Cultivars with High photosynthetic efficiency

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Agricultural Sciences in China 2002年第7期1卷 828-830页

作者： MAN Wei-qun, DU Wei-guang, ZHANG Gui-ru, LUAN Xiao-yan GE Qiao-ying, HAO Nai-bin and CHEN Yi( Soybean Institute , Heilongjiang Academy of Agricultural Sciences , Harbin 150086 , P. R . China Institute of Botany, Chinese Academy of Sciences , Beijing 100093 , P. R . China ) Soybean Institute Heilongjiang Academy of Agricultural SciencesHarbin 150086P.R.China Institute of Botany Chinese Acodemy of Sciences Beijing 100093P.R.China

The photosynthetic characters were investigated among soybean cultivars with high photosynthetic efficiency and high yield. The results indicated that: 1) There were significant differences in photosynthetic rate (Pn) and dark respiration rate (DR) under saturation light intensity and appropriate temperature. 2) There were a little difference in light compensation point among them. Photo flux density (PFD) were about 360μmol/m2·s when Pn tended to zero. 3) When PFD>1 900 μmol/m2·s, photoinhibition occuried a-mong the cultivars. Diurnal variation of Pn was shown a curve with two peaks. 4) The cultivars with high photosynthetic efficiency were subjected less to photoinhibition than that with high yield. Critical temperatures of photoinhibition in high photosynthetic efficiency cultivars were higher than that of high yield.

关键词： Soybean photosynthetic efficiency Photoinhibition Diurnal variation

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A Rice Plastidial Nucleotide Sugar Epimerase Is Involved in Galactolipid Biosynthesis and Improves photosynthetic efficiency

A Rice Plastidial Nucleotide Sugar Epimerase Is Involved in ...

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2011全国植物生物学研讨会

作者： Sodmergen College of Life Sciences Peking University

Photosynthesis is the final determinator for crop yield.To gain insight into genes controlling photosynthetic capacity,we selected from our large T-DNA mutant population a rice stunted growth mutant with decreased carbon assimilate and yield production named photoassimilate defective1(phd1).Molecular and biochemical analyses revealed that PHD1 encodes a novel chloroplast-localized UDP-glucose epimerase(UGE),which is conserved in the plant kingdom.The chloroplast localization of PHD1 was confirmed by immunoblots,immunocytochemistry,and

关键词： photoassimilate defective1 nucleotide sugar epimerase galactolipid biosynthesis photosynthetic efficiency rice

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Light intensity and hydrogel soil amendment differentially affect growth and photosynthesis of successional tree species

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Journal of Forestry Research 2023年第1期34卷 257-268页

作者： Léo Vieira Leonel Fabrício de Oliveira Reis Fábio Afonso Mazzei Moura de Assis Figueiredo Tiago Massi Ferraz Sebastiao de Oliveira Maia Júnior Patrick Costa Silva Jailma Ribeiro de Andrade Graduate Program in Agroecology State University of MaranhaoAv.Lourenco Vieira da Silva1000Jardim Sao CristovaoSao LuísMaranhao 65055-310Brazil State University of Maranhao Av.Lourenco Vieira da Silva1000Jardim Sao CristovaoSao LuísMaranhao 65055-310Brazil Graduate Program in Agriculture and Environment State University of MaranhaoPraca Goncalves Diass/nCentroBalsasMaranhao 65800-000Brazil

Global climate changes have increased temperatures,radiation indexes,and consequently,irregularities in rainfall in mainly tropical countries,considerably hindering plant establishment in recovering degraded areas.The objective of this study was to evaluate the growth and physiological characteristics of one species of each successional group:pioneer,secondary,and climax when subjected to different light intensities and hydrogel as a soil conditioner during rainy and dry periods.The experiment was conducted in the ecotone between Brazil’s two largest biomes,the Cerrado and the Amazon in the State of Maranh?o.The parameters consisted of three species:Guazuma ulmifolia Lam.(pioneer),Astronium fraxinifolium Schott(secondary),and Cariniana rubra Gardner ex Miers(climax).There were two light intensities:70%and 100%,and two planting conditions:with and without soil conditioner(hydrogel).Gas exchanges were higher during the rainy season;the pioneer and secondary species had greater heights and photosynthetic rates in the dry period;the climax species had the lowest gas exchange and lowest recovery as rainfall resumed.The pioneer and secondary species showed higher physiological plasticity,denoting better adaption to environments with high irradiance.Hydrogel improved the photosynthetic performance of these species in the dry season and in areas with 100%sunlight.

关键词： Irradiance Hydrogel photosynthetic efficiency Physiological plasticity

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The Growth-Promoting Mechanism of Brevibacillus laterosporus AMCC100017 on Apple Rootstock Malus robusta

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Horticultural Plant Journal 2022年第1期8卷 22-34页

作者： Xiaona Wang Jiucheng Zhang Xiaofei Wang Jianping An Chunxiang You Bo Zhou Yujin Hao State Key Laboratory of Crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai’anShandong 271018China Department of Microbiology College of Life SciencesShandong Agricultural UniversityTai’anShandong 271018China National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources Tai’anShandong 271018China

Plant growth-promoting rhizobacteria(PGPR) located in rhizobacteria soil are beneficial to plant growth and development. A PGPR strain AMCC100017 of Brevibacillus laterosporus synthesizes the plant hormone IAA in a tryptophan-dependent manner. In this study, the AMCC100017 strain was used to treat Malus robusta, an excellent natural rootstock for apple production, and assess its ability to promote growth. The fresh weight, dry weight, plant height, and lateral root growth of M. robusta were significantly increased with treatment. The presence of the AMCC100017 strain increased IAA content in M. robusta and promoted root secretion of tryptophan. Colonization of the strain in the roots allowed continuous synthesis of IAA and promoted plant growth. In addition, the photosynthetic efficiency in leaves increased after microbial treatment, and the utilization of nitrogen, zinc, iron, copper and magnesium in leaves was increased, which was conducive to photosynthesis.Interestingly, the activities of CAT and SOD, as well as the contents of ROS in plants colonized by AMCC100017 were increased compared to control plants, but the activities of POD and MDA contents were decreased. AMCC100017 strain affected the antioxidant capacity and stress resistance of plants. AMCC100017 strain increased the content of soluble protein and soluble sugar in plants, improved plant metabolic activity and stress resistance. Therefore, AMCC100017 not only increased IAA content and photosynthetic efficiency to promote M. robusta growth, but also affected plant through multiple metabolic pathways.

关键词： Malus robusta PGPR phytohormone photosynthetic efficiency

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A near-complete genome assembly of the allotetrapolyploid Cenchrus fungigraminus(JUJUNCAO)provides insights into its evolution and C4 photosynthesis

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Plant Communications 2023年第5期4卷 324-341页

作者： Huakun Zheng Baiyu Wang Xiuting Hua Ruiting Gao Yuhao Wang Zixin Zhang Yixing Zhang Jing Mei Yongji Huang Yumin Huang Hui Lin Xingtan Zhang Dongmei Lin Siren Lan Zhongjian Liu Guodong Lu Zonghua Wang Ray Ming Jisen Zhang Zhanxi Lin National Engineering Research Center of JUNCAO Technology College of Life ScienceFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanning 530004GuangxiChina Center for Genomics Fujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyKey Laboratory of GeneticsBreeding and Multiple Utilization of CropsMinistry of EducationFujian Agriculture and Forestry UniversityFuzhou 350002China Fuzhou Institute of Oceanography Minjiang UniversityFuzhou 350108China

JUJUNCAO(Cenchrus fungigraminus;2n=4x=28)is a Cenchrus grass with the highest biomass production among cultivated plants,and it can be used for mushroom cultivation,animal feed,and biofuel production.Here,we report a nearly complete genome assembly of JUJUNCAO and reveal that JUJUNCAO is an allopolyploid that originated2.7 million years ago(mya).Its genome consists of two subgenomes,and subgenome A shares high collinear synteny with pearl millet.We also investigated the genome evolution of JUJUNCAO and suggest that the ancestral karyotype of Cenchrus split into the A and B ancestral karyotypes of JUJUNCAO.Comparative transcriptome and DNA methylome analyses revealed functional divergence of homeologous gene pairs between the two subgenomes,which was a further indication of asymmetric DNA methylation.The three types of centromeric repeat in the JUJUNCAO genome(CEN137,CEN148,and CEN156)may have evolved independently within each subgenome,with some introgressions of CEN156 from the B to the A subgenome.We investigated the photosynthetic characteristics of JUJUNCAO,revealing its typical C4 Kranz anatomy and high photosynthetic efficiency.NADP-ME and PEPCK appear to cooperate in the major C4 decarboxylation reaction of JUJUNCAO,which is different from other C4 photosynthetic subtypes and may contribute to its high photosynthetic efficiency and biomass yield.Taken together,our results provide insights into the highly efficient photosynthetic mechanism of JUJUNCAO and provide a valuable reference genome for future genetic and evolutionary studies,as well as genetic improvement of Cenchrus grasses.

关键词： genome assembly allotetrapolyploid centromere architecture evolutionary trajectory photosynthetic efficiency Cenchrus grass

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Comparison of Responses to Mn Deficiency Between the UK Wheat Genotypes Maris Butler, Paragon and the Australian Wheat Genotype C8MM

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Journal of Integrative Plant Biology 2008年第4期50卷 457-465页

作者： Wen-Zhi Jiang Writtle College Essex University Chelmsford Essex CM1 3RR UK

Wheat grown in Mn-deficient soil has been widely observed to produce much reduced yields. Breeding for Mn-efficient wheat genotypes adapted to Mn-deficient soils would represent a long-term solution for wheat agronomy. To characterize the physiological basis of Mn efficiency in wheat genotypes would facilitate the breeding programs for producing Mn-efficient wheat. Using a solution culture and a soil culture system in the present study, a Mn-efficient UK wheat genotype Maris Butler and a Mn-inefficient UK wheat genotype Paragon have been compared with a Mn-efficient Australian wheat genotype C8MM in the responses to Mn deficiency in order to characterize the Mn efficiency in these wheat genotypes. Results showed that in solution culture, Marls Butler grown under Mn deficiency had 77% relative dry matter yield of control plants that were grown under Mn sufficiency, whereas CSMM and Paragon had 60% and 58% relative dry matter yield of their respective controls. Results from the soil culture demonstrated that relative dry matter yield remained high for Maris Butler and C8MM （53% and 56%, respectively）, whereas the value for Paragon dropped to 33%. In terms of dry matter yield and photosynthetic efficiency, Maris Butler demonstrated Mn efficiency in both solution culture and soil culture, whereas C8MM showed Mn efficiency only in soil culture. Results also demonstrated that under Mn-depleted supply in soil, plants of C8MM had a significantly higher ability in Mn uptake, whereas plants of Marls Butler showed a higher internal Mn use efficiency in comparison with plants of Paragon. Results from the present study indicate that the ability of C8MM to accumulate higher amounts of Mn is the basis of the improved Mn efficiency of this genotype in comparison with Paragon, and in Marls Butler there is a higher internal use of Mn expressed as an improved photosynthetic efficiency in conferring its Mn efficiency. It is suggested that more than one mechanism has arisen in wheat to confer tolerance to Mn deficiency.

关键词： Mn accumulation Mn deficiency Mn efficiency photosynthetic efficiency wheat genotype.

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Quantitative Trait Loci Mapping of Dark-Induced Senescence in Winter Wheat(Triticum aestivum)

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Journal of Integrative Plant Biology 2012年第1期54卷 33-44页

作者： Hongwei Li Fanyun Lin Gui Wang Ruilian Jing Qi Zheng Bin Li Zhensheng Li State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental Biology the Chinese Academyof Sciences Beijing 100101 China Institute of Crop Sciences the Chinese Academy of Agricultural Sciences Beijing 100081 China

In order to explore the genetics of dark-induced senescence in winter wheat （Triticum aestivum L.）, a quantitative trait loci （QTL） analysis was carried out in a doubled haploid population developed from a cross between the varieties Hanxuan 10 （HX） and Lumai 14 （LM）. The senescence parameters chlorophyll content （Chl a＋b, Chl a, and Chl b）, original fluorescence （Fo）, maximum fluorescence level （Fm）, maximum photochemical efficiency （FvlFm）, and ratio of variable fluorescence to original fluorescence （FvlFo） were evaluated in the second leaf of whole three-leaf seedlings subjected to 7 d of darkness. A total of 43 QTLs were identified that were associated with dark-induced senescence using composite interval mapping. These QTLs were mapped to 20 loci distributed on 11 chromosomes： 1B, 1D, 2A, 2B, 3B, 3D, 5D, 6A, 6B, 7A, and 7B. The phenotypic variation explained by each QTL ranged from 7.5% to 19.4%. Eleven loci coincided with two or more of the analyzed parameters. In addition, 14 loci co-located or were linked with previously reported QTLs regulating flag leaf senescence, tolerance to high light stress, and grain protein content （Gpc）, separately.

关键词： chlorophyll content photosynthetic efficiency senescence Triticum aestivum.

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Exploration of rice yield potential: Decoding agronomic and physiological traits

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The Crop Journal 2021年第3期9卷 577-589页

作者： Gengmi Li Jiuyou Tang Jiakui Zheng Chengcai Chu State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyThe Innovative Academy for Seed DesignChinese Academy of SciencesBeijing 100101China Key Laboratory of Southwest Rice Biology and Genetic Breeding Ministry of Agriculture/Luzhou Branch of National Rice Improvement CenterRice and Sorghum Research InstituteSichuan Academy of Agricultural SciencesDeyang 618000SichuanChina College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China

Rice grain yield is determined by three major"visible"morphological traits:grain weight,grain number per panicle,and effective tiller number,which are affected by a series of"invisible"physiological factors including nutrient use efficiency and photosynthetic efficiency.In the past few decades,substantial progress has been made on elucidating the molecular mechanisms underlying grain yield formation,laying a solid foundation for improving rice yield by molecular breeding.This review outlines our current understanding of the three morphological yield-determining components and summarizes major progress in decoding physiological traits such as nutrient use efficiency and photosynthetic efficiency.It also discusses the integration of current knowledge about yield formation and crop improvement strategies including genome editing with conventional and molecular breeding.

关键词： Rice Yield improvement Nitrogen use efficiency photosynthetic efficiency Molecular breeding

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Comparative Study on Growth Performance of Transgenic(Over-Expressed OsNHX1) and Wild-Type Nipponbare under Different Salinity Regimes

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Rice science 2015年第6期22卷 275-282页

作者： Nurul Kahrani ISHAK Zohrah SULAIMAN Kushan U.TENNAKOON Environmental and Life Sciences Faculty of ScienceUniversity Brunei Darussalam Institut Teknologi Brunei

Transgenic Nipponbare which over-expressed a Na＋/H~ antiporter gene OsNHX1 was used to compare its growth performance, water status and photosynthetic efficiency with its wild type under varying salinity regimes. Chlorophyll content, quantum yield and photosynthetic rate were measured to assess the impact of salinity stress on photosynthetic efficiency for transgenic and wild-type Nipponbare. Effects of salinity on water status and gas exchange to both lines were studied by measuring water use efficiency, instantaneous transpiration rate and stomatal conductance. Dry shoot weight and leaf area were determined after three months of growth to assess the impacts of salinity on the growth of those two lines. Our study showed that both lines were affected by salinity stress, however, the transgenic line showed higher photosynthetic efficiency, better utilization of water, and better growth due to low transpiration rate and stomatal conductance. Reduction of photosynthetic efficiency exhibited by the wild-type Nipponbare was correlated to its poor growth under salinity stress.

关键词： growth performance salinity stress Na＋/H＋ antiporter gene OsNHX1 transgenic rice photosynthetic efficiency water status

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