Constitutive basis of root system architecture:uncovering a promising trait for breeding nutrient-and drought-resilient crops

查看全文 作　　者：Zhigang [1]Liu;Tongfei [1]Qin;Michaella [1]Atienza;Yang [1]Zhao;Hanh [1]Nguyen;Huajin [1]Sheng;Toluwase [1]Olukayode;Hao [2]Song;Karim [1]Panjvani;Jurandir [3]Magalhaes;William [1,4]J.Lucas;Leon [1]V.Kochian

机构地区：[1]Global Institute for Food Security,University of Saskatchewan,Saskatoon,SK S7N 4L8,Canada;[2]Department of Computer Science,University of Saskatchewan,Saskatoon,SK S7N 5C9,Canada;[3]Embrapa Maize and Sorghum,Brazilian Agricultural Research Corporation,Sete Lagoas,MG 35701-970,Brazil;[4]Department of Plant Biology,College of Biological Sciences,University of California,Davis,CA 95616,USA

出　　处：《aBIOTECH》索引2023年第4卷第4期,共17页

摘　　要：Root system architecture(RSA)plays a pivotal role in efficient uptake of essential nutrients,such as phosphorous(P),nitrogen(N),and water In soils with heterogeneous nutrient distribution,root plasticity can optimize acquisition and plant growth.Here,we present evidence that a constitutive RSA can confer benefits for sorghum grown under both sufficient and limiting growth conditions.Our studies,using P efficient SC103 and inefficient BTx635 sorghum cultivars,identified significant differences in root traits,with SC103 developing a larger root system with more and longer lateral roots,and enhanced shoot biomass,under both nutrient sufficient and deficient conditions.In addition to this constitutive attribute,under P deficiency,both cultivars exhibited an initial increase in lateral root development;however,SC103 still maintained the larger root biomass.Although N deficiency and drought stress inhibited both root and shoot growth,for both sorghum cultivars,SC103 again maintained the better performance.These findings reveal that SC103,a P efficient sorghum cultivar,also exhibited enhanced growth performance under N deficiency and drought.Our results provide evidence that this constitutive nature of RSA can provide an avenue for breeding nutrient-and drought-resilient crops. 关键词：Constitutive root system architecture Abiotic stress Nutrient efficiency Drought resilience Plant breeding

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Constitutive basis of root system architecture:uncovering a promising trait for breeding nutrient-and drought-resilient crops

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