Improving phosphorus acquisition efficiency through modification of root growth responses to phosphate starvation in legumes
文献类型： 外文期刊
作者： Chen, Zhijian 1 ; Wang, Linjie 1 ; Cardoso, Juan Andres 2 ; Zhu, Shengnan 3 ; Liu, Guodao 1 ; Rao, Idupulapati M. 2 ; Lin, Yan 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Crop Genet Resources, Key Lab Trop Crops Germplasm Resources Genet Impro, Haikou, Peoples R China
2.Int Ctr Trop Agr CIAT, Cali, Colombia
3.Lingnan Normal Univ, Life Sci & Technol Sch, Zhanjiang, Peoples R China
4.Int Ctr Insect Physiol & Ecol icipe, Nairobi, Kenya
5.Guangdong Acad Sci, Inst Bioengn, Guangzhou, Peoples R China
关键词： phosphorus deficiency; root morphology; root architecture; root traits; Pi uptake; PSI genes
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 14 卷
页码：
收录情况： SCI
摘要： Phosphorus (P) is one of the essential macronutrients for plant growth and development, and it is an integral part of the major organic components, including nucleic acids, proteins and phospholipids. Although total P is abundant in most soils, a large amount of P is not easily absorbed by plants. Inorganic phosphate (Pi) is the plant-available P, which is generally immobile and of low availability in soils. Hence, Pi starvation is a major constraint limiting plant growth and productivity. Enhancing plant P efficiency can be achieved by improving P acquisition efficiency (PAE) through modification of morpho-physiological and biochemical alteration in root traits that enable greater acquisition of external Pi from soils. Major advances have been made to dissect the mechanisms underlying plant adaptation to P deficiency, especially for legumes, which are considered important dietary sources for humans and livestock. This review aims to describe how legume root growth responds to Pi starvation, such as changes in the growth of primary root, lateral roots, root hairs and cluster roots. In particular, it summarizes the various strategies of legumes to confront P deficiency by regulating root traits that contribute towards improving PAE. Within these complex responses, a large number of Pi starvation-induced (PSI) genes and regulators involved in the developmental and biochemical alteration of root traits are highlighted. The involvement of key functional genes and regulators in remodeling root traits provides new opportunities for developing legume varieties with maximum PAE needed for regenerative agriculture.
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