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SlPGR5/SlPGRL1 pathway-dependent cyclic electron transport regulates photoprotection and chloroplast quality in tomato plants

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Horticultural Plant Journal 2025年第1期11卷 211-226页

作者： Xiaolong Yang Yumeng Zhang Ting Liu Jiali Shi Mingfang Qi Riyuan Chen Yufeng Liu Tianlai Li College of Horticulture South China Agricultural UniversityGuangzhouGuangdong 510642China College of Horticulture Shenyang Agricultural UniversityShenyangLiaoning 110866China Jiuquan academy of agricultural sciences JiuquanGansu 735099China

The essential photoprotective role of proton gradient regulation 5(PGR5)-dependent cyclic electron flow(CEF)has been reported in Arabidopsis,rice,and ***,its functional assessment has not been performed in tomato *** this study,we focused on elucidate the function of SlPGR5 and SlPGR5-like photosynthetic phenotype 1(PGRL1)in *** performed RNA interference and found that SlPGR5/SlPGRL1-suppressed transformants exhibited extremely low CO_(2)assimilation capacity,their photosystem I(PSI)and PSII were severely photoinhibited and chloroplasts were obviously *** SlPGR5/SlPGRL1-suppressed plants almost completely inhibited CEF and Y(ND),and PSII photoinhibition may be directly related to the inability to produce sufficient proton motive force to induce *** transgenic plants overexpressing SlPGR5 and SlPGRL1 driven by 35S promoter capable alleviate photoinhibition of plants under low night *** transcriptomic and proteomic analyses suggested that the nuclear gene transcription and turnover of chloroplast proteins,including the plastoglobule-related proteins,were closely related to SlPGR5/SlPGRL1 pathway dependent *** bridge relationship between CEF and chloroplast quality maintenance was a novel report to our *** conclusion,these results revealed the regulatory mechanism of the SlPGR5/SlPGRL1 pathway in photoprotection and maintenance of chloroplast function in tomato,which is crucial for reduce yield loss,especially under adverse environmental conditions.

关键词： Tomato Cyclic electron transport SlPGR5/SlPGRL1 Photoprotection Chloroplast quality Plastoglobulus

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Priority sources identification and risks assessment of heavy metal(loid)s in agricultural soils of a typical antimony mining watershed

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Journal of Environmental sciences 2025年第1期147卷 153-164页

作者： Lianhua Liu You Li Xiang Gu Roberto Xavier Supe Tulcan Lingling Yan Chunye Lin Junting Pan Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China School of Environment Beijing Normal UniversityBeijing 100875China Yiyang academy of agricultural sciences Yiyang 413099China Institute of agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081China

Heavy metal(loid)(HM)pollution in agricultural soils has become an environmental concern in antimony(Sb)mining ***,priority pollution sources identification and deep understanding of environmental risks of HMs face great challenges due to multiple and complex pollution sources ***,an integrated approach was conducted to distinguish pollution sources and assess human health risk(HHR)and ecological risk(ER)in a typical Sb mining watershed in Southern *** approach combines absolute principal component score-multiple linear regression(APCS-MLR)and positivematrix factorization(PMF)models with ER and HHR *** pollution sources were distinguished for both models,and APCS-MLR model was more accurate and *** HM concentration source was natural source(39.1%),followed by industrial and agricultural activities(23.0%),unknown sources(21.5%)and Sb mining and smelting activities(16.4%).Although natural source contributed the most to HM concentrations,it did not pose a significant *** and agricultural activities predominantly contributed to ER,and attention should be paid to Cd and *** mining and smelting activities were primary anthropogenic sources of HHR,particularly Sb and As *** ER and HHR assessments,Sb mining and smelting,and industrial and agricultural activities are critical sources,causing serious ecological and health *** study showed the advantages of multiple receptor model application in obtaining reliable source identification and providing better source-oriented risk *** pollution management,such as regulating mining and smelting and implementing soil remediation in polluted agricultural soils,is strongly recommended for protecting ecosystems and humans.

关键词： Antimony Heavy metal(loid) Risk assessment Pollution sources Mining and smelting

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Hyperosmolality tolerance of freshwater largemouth bass Micropterus salmoides to brackish in early ontogenetic stages of eggs,embryos,and yolk-sac larvae

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Journal of Oceanology and Limnology 2025年第1期43卷 286-298页

作者： Du LUO Dingtian YANG South China Sea Institute of Oceanology Chinese Academy of SciencesGuangzhou 510301China Pearl River Fisheries Research Institute Chinese Academy of Fishery SciencesGuangzhou 510380China University of Chinese academy of sciences Beijing 100049China

Salinity is recognized as a pivotal factor limiting the migration of freshwater fish to brackish *** largemouth bass(LMB,Micropterus salmoides),a globally translocated freshwater fish,exhibits estuarine distribution,yet its hyperosmoregulatory capacity during early ontogenetic stages remains inadequately *** investigate the impact of freshwater salinization,a series of experiments were conducted in guangzhou and Foshan,*** reveal that freshwater-activated mature eggs and naturally fertilized oocytes maintained nearly identical osmotic homeostasis,with diameters of 1.38±0.07 mm and 1.37±0.05 mm,***,both exhibited peak water excretion at a salinity of ***,a reduction in water permeability was observed in hyperosmotic *** hatching rates increased from 27.5%±14.4%in the 1.0 group to 75.1%±12.0%in the 6.0 group under fluctuating temperature ***-sac LMB larvae consistently reduced survival time from 12.5 d at 1.0 to 50.7±2.1 min at salinity of ***,more developed larvae also experienced a decrease in survival *** regression models fitting lethal time with salinity indicated a sharp decrease between 10.0 and *** findings offer practical insights for predicting distribution patterns and enhancing aquaculture technology for ***,they may contribute theoretically to the broader understanding of the osmoregulatory mechanisms of freshwater fish.

关键词： osmotic homeostasis acute toxicity median lethal time hatching rate dose-response model

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Foliar-applied zinc promotes cadmium allocation from leaf surfaces to grains in rice

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Journal of Environmental sciences 2025年第5期151卷 582-593页

作者： Ya-Ting Liu Bo-Fang Yan Xuan Cai Hong-Xiang Zheng Rong-Liang Qiu Ye-Tao Tang School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510006China Institute of Facility Agriculture Guangdong Academy of Agricultural SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of agricultural&Rural Pollution Abatement and Environmental Safety College of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China

The accumulation of Cd by rice poses significant health *** fertilizationwith Zn can reduce grain Cd contents in rice grown in Cd-contaminated ***,atmospheric deposition on leaves is another vector of Cd contamination,and it remains unclear how Zn application affects the allocation of such *** conducted an experiment where the flag leaves of rice plants were treated with solutions with various Zn concentrations and a constant Cd *** 111Cd stable isotope was used to trace the flux of foliarapplied *** levels of foliar-applied Zn enhanced Cd efflux and grain *** is attributed to limited sequestration of foliar-applied Cd in the leaf cell symplasm and increased Cd desorption from leaf cell walls when a high Zn^(2+)concentration occurs in the *** Zn oxide nanoparticlesmitigated these ***,the expressions of OsLCT1 and OsZIP7 in flag leaves and OsHMA2 and OsZIP7 in the uppermost nodes were upregulated under high-Zn^(2+)treatment,which may facilitate Cd phloem loading and grain *** is advised in using foliar Zn in areas with high atmospheric Cd due to potential grain-contamination risks.

关键词： Atmospheric deposition Isotope labelling Metal interaction Phloem Cell wall

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Crustal magma oxidation state and endowments in porphyry copper deposits

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Science China Earth sciences 2025年第1期68卷 226-236页

作者： Yumin AI Massimo CHIARADIA Chao WU Huayong CHEN Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China University of Chinese academy of sciences Beijing100049China Department of Earth sciences University of GenevaGeneva1205Switzerland Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou510640China

Porphyry copper deposits(PCDs)supply the majority of the world's copper(Cu)as well as significant amounts of molybdenum(Mo)and gold(Au).The formation of these deposits is controlled by a variety of geological factors,among which the magmatic oxidation is one of the focuses of current *** study investigates the redox characteristics of arc magmas by analyzing the ratio of vanadium(V)to scandium(Sc)and its correlation with the oxygen fugacity(fO2)of magmas from arcs of various crustal thicknesses *** compiled an extensive dataset of published V/Sc values and studied the partition coefficients of Vand Sc between minerals and silicate melts across various magmatic *** results demonstrate that fractional crystallization of magnetite markedly reduces V/Sc values of the residual ***,magnesium number(Mg#)at the onset of magnetite fractionation is strongly positively correlated with fO_(2)of the equilibrium *** on this,the oxidation of arc magmas from different crustal thicknesses can be *** result suggests that magmas generated in crusts thicker than 20 km tend to be more oxidized with increasing crust *** trend is attributed to enhanced intracrustal differentiation processes involving garnet and amphibole,particularly in mature island and continental *** contrast,magmas in thinner arc crusts(city to generate *** oxidized,primitive arc magmas are less favorable for PCD formation due to that they tend to experience magnetite fractionation and thus sulfide saturation in the early stage of magma evolution,a process leading to copper *** the contrary,thick arcs where magnet

关键词： Magma evolution V/Sc systematics Magnetite Oxygen fugacity Porphyry copper deposits

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A major facilitator superfamily transporter PlMFS1 contributes to growth,oosporogenesis,and pathogenesis of Peronophythora litchii

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Horticultural Plant Journal 2025年第1期11卷 189-198页

作者： Pinggen Xi Tianfang Guan Xiyuan Liu Xiaofeng Li Ziyuan Dou Liyun Shi Jiamin Huang Liqun Jiang Junjian Situ Minhui Li Guanghui Kong Zide Jiang Guangdong Province Key Laboratory of Microbial Signals and Disease Control/Department of Plant Pathology South China Agricultural UniversityGuangzhouGuangdong 510642China Rice Research Institute Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology in Rice BreedingGuangzhouGuangdong 510640China

Major facilitator superfamily(MFS)transporters are secondary active membrane transporters that play an important role in solute interchange and energy *** litchii causes the most destructive disease on lichi,litchi downy ***90 was reported as a key oosporogenesis ***,we identified an MFS transporter gene PlMFS1,which is up-regulated during oospore formation at the late infection stage,while down-regulated in the PlM90 *** investigate PlMFS1 function,we generated PlMFS1knockout mutants using CRISPR/Cas9-mediated genome editing *** with the wild-type strain SHS3,PlMFS1 deletion impaired mycelium growth,zoospore release,oospore production and ***,PlMFS1 deletion significantly affected *** utilization of fructose,lactose and maltose,and may be the PlMFS1 mechanism involved in mycelial ***1 gene deletion also led to deceased laccase activity,laccase-encoding gene downregulation and impaired *** *** our knowledge,this is the first report of an MFS transporter involved in sugar utilization,sexual reproduction,asexual reproduction and pathogenesis in oomycetes.

关键词： Peronophythora litchii Major facilitator superfamily Oospore Pathogenicity

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Impact of the Regional Comprehensive Economic Partnership(RCEP)implementation on agricultural sector in regional countries:A global value chain perspective

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Journal of Integrative Agriculture 2025年第1期24卷 380-397页

作者： Shaowen Xu Jingfei Qian Yangfen Chen Huijie Zhang Institute of agricultural Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081China agricultural Information Institute Chinese Academy of Agricultural SciencesBeijing 100081China

The Regional Comprehensive Economic Partnership(RCEP)has created favorable conditions for building deeply integrated agricultural value chains(AVC)in *** on the RCEP agreement,this study employed the global trade analysis project(GTAP)model to evaluate the impact of RCEP on AVC of member countries in terms of time,tariff reduction,and reduction of non-tariff barriers(NTB).The results indicate that(1)the implementation of RCEP boosts the value-added to agricultural exports for most member countries,particularly in competitive industries;(2)the increase in domestic production and processing capacity,reflected in domestic value-added(DVA),is the primary factor driving the rise in the value-added of agricultural exports across various industries of member countries;(3)RCEP enhances the participation of most regional countries in AVC,with varying impacts on AVC positioning,thereby fostering regional AvC development;and(4)RCEP has a positive effect on AVC indicators both in the short and long term,with the effect becoming more pronounced over ***,reducing NTB enhances the positive effects of tariff reductions on AVC *** on the analyses,the following recommendations are proposed:(1)Leverage the development opportunities arising from RCEP implementation to enhance the agricultural DVA;(2)capitalize on cooperative opportunities created by RCEP to build cohesive regional AVC;and(3)prioritize the effective implementation of RCEP'shigh-qualityrules.

关键词： RCEP GTAP agricultural value chains tariff non-tariff barriers trade facilitation

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Alternative splicing drives the functional diversification of a b HLH transcription factor in the control of growth and drought tolerance in rice

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Science Bulletin 2025年第2期70卷 153-156页

作者： Min Ning Qinyan Li Ya Wang Qingmao Li Yonghong Tao Fan Zhang Fengyi Hu Liyu Huang Key Laboratory of Biology and Germplasm Innovation of Perennial Rice from Ministry of Agriculture and Rural Affairs School of AgricultureYunnan UniversityKunming 650091China Cereal Crops Research Institute Henan Academy of Agricultural SciencesZhengzhou 450002China Wenshan academy of agricultural sciences Wenshan 663000China State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural Sciences(CAAS)Beijing 100081China

Given the increase in global climate change,reconciling the increasing demand for food production with dwindling water resources poses a formidable *** ensure sustainable rice production and global food security,a thorough exploration of the genetic mechanism that underlies the delicate balance between growth and drought tolerance in rice is *** sessile nature of plants has driven their adaptive evolution,enabling them to regulate gene expression and exhibit physiological and developmental plasticity in response to environmental changes[1].Alternative splicing(AS),a prevalent phenomenon in plants,plays a crucial role in the regulation of posttranscriptional gene expression[2].AS serves as an essential mechanism involved in both developmental processes and stress responses[3–5].

关键词： drought mechanism tolerance

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The long noncoding RNA ALEX1 confers a functional phase state of ARF3 to enhance rice resistance to bacterial pathogens

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Molecular Plant 2025年第1期18卷 114-129页

作者： Meng-Qi Lei Rui-Rui He Yan-Fei Zhou Lu Yang Zhen-Fei Zhang Chao Yuan Wen-Long Zhao Yu Cheng Jian-Ping Lian Yu-Chan Zhang Wen-Tao Wang Yang Yu Yue-Qin Chen Guangdong Provincial Key Laboratory of Plant Stress Biology State Key Laboratory for BiocontrolSchool of Life SciencesSun Yat-Sen UniversityGuangzhou 510275P.R.China Guangdong Key Laboratory of Crop Germplasm Resources Preservation and Utilization Agro-biological Gene Research CenterGuangdong Academy of Agricultural SciencesGuangzhou 510640P.R.China Plant Protection Research Institute Guangdong Academy of Agricultural SciencesGuangzhou 510640P.R.China

Rice bacterial blight is a devastating disease worldwide,causing significant yield *** how plants defend against microbial infection is critical for sustainable crop *** this study,we show that ALEX1,a previously identified pathogen-induced long noncoding RNA,localizes to the nucleus and directly binds AUXIN RESPONSE FACTOR 3(ARF3).We showed that ARF3 forms the condensates in the nucleus via its intrinsically disordered middle region(MR),and that these ARF3 condensates display solid-like *** further revealed that ALEX1 directly binds the MR of ARF3 to regulate ARF3 condensate dynamics and promote ARF3 *** dispersed,dimeric form of ARF3,referred to as its functional phase state,enhances its ability to transcriptionally repress the expression of downstream target genes such as JAZ13,thereby modulating the jasmonic acid signaling pathway and enhancing pathogen resistance in ***,this study reveals the role of a long noncoding RNA in regulating protein condensation and complex assembly,thus contributing to plant pathogen resistance.

关键词： lncRNA Xoo ARF3 protein condensates

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A genome-wide association study and transcriptome analysis reveal the genetic basis for the Southern corn rust resistance in maize

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Journal of Integrative Agriculture 2025年第2期24卷 453-466页

作者： Yang Wang Chunhua Mu Xiangdong Li Canxing Duan Jianjun Wang Xin Lu Wangshu Li Zhennan Xu Shufeng Sun Ao Zhang Zhiqiang Zhou Shenghui Wen Zhuanfang Hao Jienan Han Jianzhou Qu Wanli Du Fenghai Li Jianfeng Weng College of Agronomy Shenyang Agricultural University Institute of Crop sciences Chinese Academy of Agricultural Sciences Institute of Maize Research Shandong Academy of Agricultural Sciences College of Plant Protection Shandong Agricultural University Institute of Maize Shanxi Agricultural University

Southern corn rust(SCR) is an airborne fungal disease caused by Puccinia polysora Underw.(P. polysora) that adversely impacts maize quality and yields worldwide. Screening for new elite SCR-resistant maize loci or genes has the potential to enhance overall resistance to this pathogen. Using phenotypic SCR resistance-related data collected over two years and three geographical environments, a genome-wide association study was carried out in this work, which eventually identified 91 loci that were substantially correlated with SCR susceptibility. These included 13 loci that were significant in at least three environments and overlapped with 74 candidate genes(B73＿RefGen＿v4). Comparative transcriptomic analyses were then performed to identify the genes related to SCR infection, with 2,586 and 797 differentially expressed genes(DEGs) ultimately being identified in the resistant Qi319and susceptible 8112 inbred lines following P. polysora infection, respectively, including 306 genes common to both lines. Subsequent integrative multi-omics investigations identified four potential candidate SCR response-related genes. One of these genes is ZmHCT9, which encodes the protein hydroxycinnamoyl transferase 9. This gene was up-regulated in susceptible inbred lines and linked to greater P. polysora resistance as confirmed through cucumber mosaic virus(CMV)-based virus induced-gene silencing(VIGS) system-mediated gene silencing. These data provide important insights into the genetic basis of the maize SCR response. They will be useful for for future research on potential genes related to SCR resistance in maize.

关键词： maize southern corn rust genome-wide association study transcriptome

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