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Functional assembly of root-associated microbial consortia improves nutrient efficiency and yield in soybean

Journal of Integrative Plant biology 2021年第6期63卷 1021-1035页

作者： Cunhu Wang Yanjun Li Mingjia Li Kefei Zhang Wenjing Ma Lei Zheng Hanyu Xu Baofeng Cui Ran Liu Yongqing Yang Yongjia Zhong Hong Liao root biology center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China

root-associated microbes are critical for plant growth and nutrient acquisition. However, scant information exists on optimizing communities of beneficial root-associated microbes or the mechanisms underlying their interactions with host plants. In this report, we demonstrate that rootassociated microbes are critical influencers of host plant growth and nutrient acquisition. Three synthetic communities(SynComs) were constructed based on functional screening of 1,893 microbial strains isolated from root-associated compartments of soybean plants. Functional assemblage of SynComs promoted significant plant growth and nutrient acquisition under both N/P nutrient deficiency and sufficiency *** trials further revealed that application of SynComs stably and significantly promoted plant growth, facilitated N and P acquisition, and subsequently increased soybean yield. Among the tested communities, SynCom1 exhibited the greatest promotion effect, with yield increases of up to 36.1% observed in two field sites. Further RNA-seq implied that SynCom application systemically regulates N and P signaling networks at the transcriptional level, which leads to increased representation of important growth pathways, especially those related to auxin responses. Overall,this study details a promising strategy for constructing SynComs based on functional screening,which are capable of enhancing nutrient acquisition and crop yield through the activities of beneficial root-associated microbes.

关键词： growth promotion nitrogen phosphorus root-associated microbes SynCom soybean

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Partnering crops with root-associated microbes for soil health and agricultural sustainability

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Pedosphere 2024年第1期34卷 26-29页

作者： Cunhu WANG Yongjia ZHONG Hong LIAO root biology center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China

Increasing global demand for food presents a significant challenge to maintaining soil health and sustainable production of agricultural crops. As plant root-associated microbial fitness is greatly impacted by community growth, development, and nutrient acquisition, the cultivation of functional assembly of root-associated microbes may provide solutions for achieving food security while maintaining healthy soils. Here, we propose a four-part strategy to promote soil health and agricultural productivity by partnering crops with root-associated microbes.

关键词： crops soil agricultural

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Genetic improvement of legume roots for adaption to acid soils

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The Crop Journal 2023年第4期11卷 1022-1033页

作者： Xinxin Li Xinghua Zhang Qingsong Zhao Hong Liao root biology center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina

Acid soils occupy approximately 50% of potentially arable *** crop productivity in acid soils,therefore,will be crucial for ensuring food security and agricultural *** soil acidity often coexists with phosphorus(P) deficiency and aluminum(Al) toxicity,a combination that severely impedes crop growth and yield across wide *** roots explore soil for the nutrients and water required for plant growth and development,they also sense and respond to below-ground *** the terrestrial context of widespread P deficiency and Al toxicity pressures,plants,particularly roots,have evolved a variety of mechanisms for adapting to these *** legumes,soybean(Glycine max) plants may acquire nitrogen(N) through symbiotic nitrogen fixation(SNF),an adaptation that can be useful for mitigating excessive N fertilizer use,either directly as leguminous crop participants in rotation and intercropping systems,or secondarily as green manure cover *** this review,we investigate legumes,especially soybean,for recent advances in our understanding of root-based mechanisms linked with root architecture modification,exudation and symbiosis,together with associated genetic and molecular strategies in adaptation to individual and/or interacting P and Al conditions in acid *** propose that breeding legume cultivars with superior nutrient efficiency and/or Al tolerance traits through genetic selection might become a potentially powerful strategy for producing crop varieties capable of maintaining or improving yields in more stressful soil conditions subjected to increasingly challenging environmental conditions.

关键词： Acid soils Phosphorus deficiency Aluminum toxicity Genetic improvement Soybean

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INTERCROPPING TEA PLANTATIONS WITH SOYBEAN AND RAPESEED ENHANCES NITROGEN FIXATION THROUGH SHIFTS IN SOIL MICROBIAL COMMUNITIES

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Frontiers of Agricultural Science and Engineering 2022年第3期9卷 344-355页

作者： Yongjia ZHONG Lini LIANG Ruineng XU Hanyu XU Lili SUN Hong LIAO root biology center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China.

Intercropping with eco-friendly crops is a well-known strategy for improving agriculture sustainability with benefits throughout the soil community,though the range of crop impacts on soil microbiota and extent of feedbacks to crops remain largely *** study evaluated the impacts of different intercropping systems on soil bacterial community composition,diversity,and potential functions in tea *** systems were found to be significantly influenced soil *** the three tested intercropping systems(tea-soybean,tea-rapeseed and tea-soybean-rapeseed),the teasoybean-rapeseed intercropping system had the most dramatic influence on soil microbiota,with increases in richness accompanied by shifts in the structure of tea garden soil bacterial ***,relative abundance of potentially beneficial bacteria associated with essential mineral nutrient cycling increased significantly in the tea-soybean-rapeseed intercropping *** addition,soil microbial functions related to nutrient cycling functions were significantly *** was in accordance with increasing relative abundance of nitrogen cycling bacteria,including Burkholderia *** Rhodanobacter *** on these results,it is proposed that intercropping tea plantation with soybean and rapeseed may benefit soil microbiota,and thereby promises to be an important strategy for improving soil health in ecologically sound tea production systems.

关键词： intercropping rapeseed soil microbe soybean tea garden

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Diverse functions of GmNLA1 members in controlling phosphorus homeostasis highlight coordinate response of soybean to nitrogen and phosphorus availability

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The Crop Journal 2023年第4期11卷 1251-1260页

作者： Ming Zhou Yaxue Li Xing Lu Panmin He Cuiyue Liang Jiang Tian root biology center State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresourcesCollege of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642GuangdongChina

Nitrogen(N) and phosphorus(P) are two essential mineral nutrients for plant growth,which are required in relative high amount in *** have evolved a series of strategies for coordinately acquiring and utilizing N and ***,physiological and molecular mechanisms underlying of N and P interactions remain largely unclear in soybean(Glycine max).In this study,interactions of N and P were demonstrated in soybean as reflected by significant increases of phosphate(Pi) concentration in both leaves and roots by N deficiency under Pi sufficient conditions.A total of four nitrogen limitation adaptation(NLA),encoding RING-type E3 ubiquitin ligase were subsequently identified in soybean *** them,transcription of Gm NLA1-1 and Gm NLA1-3 was decreased in soybean by N starvation under Pi sufficient conditions,not for Gm *** of all three Gm NLA1 members was able to increase Pi concentration regardless of the P and N availability in the growth medium,but decrease fresh weight under normal conditions in soybean hairy ***,comparted to changes in control lines at two N levels,N deficiency only resulted in a relatively higher increase of Pi concentration in Gm NLA1-1 or Gm NLA1-3 suppression lines,strongly indicating that Gm NLA1-1 and Gm NLA1-3 might regulate P homeostasis in soybean response to N *** together,our result suggest that redundant and diverse functions present in Gm NLA1 members for soybean coordinate responses to P and N availability,which mediate P homeostasis.

关键词： GmNLA1 N availability P deficiency P homeostasis Soybean

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Soybean(Glycine max)rhizosphere organic phosphorus recycling relies on acid phosphatase activity and specific phosphorusmineralizing-related bacteria in phosphate deficient acidic soils

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Journal of Integrative Agriculture 2024年第5期23卷 1685-1702页

作者： Qianqian Chen Qian Zhao Baoxing Xie Xing Lu Qi Guo Guoxuan Liu Ming Zhou Jihui Tian Weiguo Lu Kang Chen Jiang Tian Cuiyue Liang root biology center State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesCollege of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China college of Natural resources and environment South China Agricultural UniversityGuangzhou 510642China Henan Academy of Crops Molecular Breeding Henan Academy of Agricultural SciencesZhengzhou 450002China

Bacteria play critical roles in regulating soil phosphorus(P) cycling. The effects of interactions between crops and soil P-availability on bacterial communities and the feedback regulation of soil P cycling by the bacterial community modifications are poorly understood. Here, six soybean(Glycine max) genotypes with differences in P efficiency were cultivated in acidic soils with long-term sufficient or deficient P-fertilizer treatments. The acid phosphatase(AcP) activities, organic-P concentrations and associated bacterial community compositions were determined in bulk and rhizosphere soils. The results showed that both soybean plant P content and the soil AcP activity were negatively correlated with soil organic-P concentration in P-deficient acidic soils. Soil P-availability affected the ɑ-diversity of bacteria in both bulk and rhizosphere soils. However, soybean had a stronger effect on the bacterial community composition, as reflected by the similar biomarker bacteria in the rhizosphere soils in both P-treatments. The relative abundance of biomarker bacteria Proteobacteria was strongly correlated with soil organic-P concentration and AcP activity in low-P treatments. Further high-throughput sequencing of the phoC gene revealed an obvious shift in Proteobacteria groups between bulk soils and rhizosphere soils, which was emphasized by the higher relative abundances of Cupriavidus and Klebsiella, and lower relative abundance of Xanthomonas in rhizosphere soils. Among them, Cupriavidus was the dominant phoC bacterial genus, and it was negatively correlated with the soil organic-P concentration. These findings suggest that soybean growth relies on organic-P mineralization in P-deficient acidic soils, which might be partially achieved by recruiting specific phoCharboring bacteria, such as Cupriavidus.

关键词： organic phosphorus acid phosphatase soybean bacterial community phoC-harboring bacteria rhizosphere

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Reducing residues of tetracycline and its resistance genes in soil-maize system and improving plant growth:Selecting the best remediation substance

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Pedosphere 2022年第2期32卷 268-282页

作者： Junmei QIN Jianli SONG Fenwu LIU Jian ZHANG Huaye XIONG Wenlong BI Yue NI college of resources and environment National Experimental Teaching Demonstration Center for Agricultural Resources and EnvironmentShanxi Agricultural UniversityTaigu 030801China Key Laboratory of Soil environment and Nutrient resources in Shanxi Province Taiyuan 030000China college of resources and environment Southwest UniversityChongqing 400715China

Tetracycline(TC)and tetracycline resistance genes(TRGs)in plant edible tissues pose a potential risk to the environment and then to human *** study used a pot experiment to investigate the effects of different remediation substances(worm castings,fungal chaff,microbial inoculum,and biochar)on the physiological characteristics of maize and the residues of TC and TRGs in the soil-maize system under TC *** results showed that TC significantly inhibited growth,disrupted the antioxidant defense system balance,and increased proline and malondialdehyde contents of maize *** residue contents were significantly higher in root than in shoot,and followed the order root>stem-leaf>grain,which was consistent with the distribution of bioconcentration factors in the different organs of maize *** TC residue content in the soil under different treatments was 0.013–1.341 mg *** relative abundances of different antibiotic resistance genes in the soil-maize system varied greatly,and in maize plants followed the order intI1>tetW>tetG>tet B>tetM>tetX>*** the soil,tetX had the highest relative abundance,followed by tetG and tetW.A redundancy analysis(RDA)showed that TC was positively correlated with *** addition of different remediation substances alleviated the toxicity of TC on maize physiological characteristics and reduced the TC and TRG residues in the soil-maize system,with biochar being the best remediation *** results provide new insights into the effect of biochar on the migration of TC and TRGs from soil to plants.

关键词： antibiotics biochar fungal chaff microbial inoculum plant physiological characteristics worm castings

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Aluminium is essential for root growth and development of tea plants(Camellia sinensis)^∞

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Journal of Integrative Plant biology 2020年第7期62卷 984-997页

作者： Lili Sun Mengshi Zhang Xiaomei Liu Qianzhuo Mao Chen Shi Leon VKochian Hong Liao root biology center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China Vector-Borne Virus Research center Fujian Agriculture and Forestry UniversityFuzhou 350002China Global Institute for Food Security University of SaskatchewanSaskatoon S7N 4J8Canada

On acid soils,the trivalent aluminium ion(Al3+)predominates and is very rhizotoxic to most plant *** some native plant species adapted to acid soils including tea(Camellia sinensis),Al3+has been regarded as a beneficial mineral *** this study,we discovered that Al3+is actually essential for tea root growth and development in all the tested *** ion promoted new root growth in five representative tea varieties with dose-dependent responses to Al3+*** the absence of Al3+,the tea plants failed to generate new roots,and the root tips were damaged within 1 d of Al ***-tural analysis of root tips demonstrated that Al was required for root meristem development and *** situ morin@staining of Al3+in roots revealed that Al mainly localized to nuclei in root meristem cells,but then gradually moved to the cytosol when Al3+was subsequently *** movement of Al3+from nuclei to cytosols was accompanied by exacerbated DNA damage,which suggests that the nuclear-targeted Al primarily acts to maintain DNA *** together,these results provide novel evidence that Al3+is essential for root growth in tea plants through maintenance of DNA integrity in meristematic cells.

关键词： sinensis roots Camellia

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Generation of seed lipoxygenase-free soybean using CRISPR-Cas9

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The Crop Journal 2020年第3期8卷 432-439页

作者： Jie Wang Huaqin Kuang Zhihui Zhang Yongqing Yang Long Yan Mengchen Zhang Shikui Song Yuefeng Guan college of resources and environment Fujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina FAFU-UCR Joint center for Horticultural Plant biology and Metabolomics Haixia Institute of Science and TechnologyFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina root biology center College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina The Key Laboratory of Crop Genetics and Breeding of Hebei Institute of Cereal and Oil CropsHebei Academy of Agricultural and Forestry SciencesShijiazhuang 050035HebeiChina

Beany flavor induced by three lipoxygenases(LOXs, including LOX1, LOX2, and LOX3)restricts human consumption of soybean. It is desirable to generate lipoxygenase-free new mutant lines to improve the eating quality of soybean oil and protein products. In this study, a pooled clustered regularly interspaced short palindromic repeats(CRISPR)-CRISPRassociated protein 9(Cas9) strategy targeting three GmLox genes(GmLox1, GmLox2, and GmLox3) was applied and 60 T_0 positive transgenic plants were generated, carrying combinations of sg RNAs and mutations. Among them, GmLox-28 and GmLox-60 were gmlox1 gmlox2 gmlox3 triple mutants and GmLox-40 was a gmlox1 gmlox2 double *** of T_1 mutant plants derived from GmLox-28, GmLox-60, and GmLox-40 showed that mutation in the GmLox gene was inherited by the next generation. Colorimetric assay revealed that plants carrying different combinations of mutations lost the corresponding lipoxygenase activities. Transgene-free mutants were obtained by screening the T_2 generation of lipoxygenase-free mutant lines(GmLox-28 and GmLox-60). These transgeneand lipoxygenase-free mutants could be used for soybean beany flavor reduction without restriction by regulatory frameworks governing transgenic organisms.

关键词： LOX Generation of seed lipoxygenase-free soybean using CRISPR-Cas9 CRISPR

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Plant water use strategies in the Shapotou artificial sand-fixed vegetation of the southeastern margin of the Tengger Desert, northwestern China

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Journal of Mountain Science 2019年第4期16卷 898-908页

作者： ZHAO Liang-ju WANG Xiao-gang ZHANG Yu-cui XIE Cong LIU Quan-yu MENG Fei Key Laboratory of Earth Surface System and environmental Carrying Capacity College of Urban and Environmental Sciences Northwest University Northwest Institute of Eco-environment and resources Chinese Academy of Sciences Key Laboratory of Agricultural Water resources Center for Agricultural Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences college of Tourism and environment Ankang University

Stable oxygen and hydrogen isotopic compositions(δ^(18)O and δD) of plant xylem water and its potential water sources can provide new information for studying water sources, competitive interactions and water use patterns of plants. The contributions of different water sources to three plants, Hedysarum scoparium(HS), Caragana Korshinskii(CK) and Artemisia ordosica(AO), were investigated in the artificial sand-fixed vegetation of Shapotou, the southeastern margin of the Tengger Desert of northwestern China, based on meteorological data and δ^(18)O and δD values of precipitation, groundwater, soil water and xylem water of HS, CK and AO. Our results indicated that soil water infiltration through precipitation was the main water source of the artificial sand-fixed vegetation. Obvious differences in soil water content and in δ^(18)O of soil water and xylem water were found among different seasons. No relationship was found between the δ^(18)O in plant xylem water and in soil water in January. The same water use patterns were found in CK, HS and AO in May, suggesting they have the same water sources. The different water sources of CK, HS and AO in August indicate that water competition occurred. In addition, the main water sources of CK, HS and AO in August mainly come from shallow soil water, while they use relatively deep soil water in May. This phenomenon is related to the differences of soil water content throughout soil profile, precipitation, transpiration and water competition under different growth periods. The water use patterns of CK, HS and AO respond to soil water content throughout the soil profile and their competition balance for water uptake during different growth season. The results indicate that these sandfixed plants have developed into a relatively stable stage and they are able to regulate their water use behavior as a response to the environmental conditions, which reinforces the effectiveness of plantation of native shrubs without irrigation in de

关键词： Plant water source Stable hydrogen and oxygen isotopes Artificial and sand-fixed vegetation in Shapotou

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