干旱区生态环境知识资源中心(Arid): Regulatory effect of phosphorus and nitrogen on nodulation and plant performance of leguminous shrubs

Arid

DOI	10.1093/aobpla/plz047
	Regulatory effect of phosphorus and nitrogen on nodulation and plant performance of leguminous shrubs
	Miguez-Montero, M. A.1; Valentine, A.2; Perez-Fernandez, M. A.1
通讯作者	Miguez-Montero, M. A.
来源期刊	AOB PLANTS
ISSN	2041-2851
出版年	2020
卷号	12 期号:1
英文摘要	The impact of phosphorus (P) nutrition on plant growth, symbiotic N-2 fixation, and phosphorus and nitrogen use and their assimilation was investigated in four leguminous plants of the genus Cytisus. Plants inoculated with Rhizobium strains isolated from plants of the four species growing in the wild were crop under controlled conditions in soils with either low P (5 mu M) or high P (500 mu M). The experiment was replicated in the presence and absence of plant irrigation to test for the effects of drought stress of inoculated and non-inoculated plants under the two P levels of fertilization. P-low treatments increased nodule production while plant biomass and shoot and root P and N contents were maximum at sufficient P. The reduction of P in the soil clearly induced biological nitrogen fixation and greater phosphorus and nitrogen uptake efficiencies, as shown by the total N and P accumulated in plants. Similarly, distinct tolerances to drought support this idea. Cytisus balansae had the lowest tolerance to water scarcity. Cytisus multiflorus and Cytisus scoparius were the most resistant species to drought, with this resistance enhanced in the inoculated plants. In the four species, the inoculation treatment clearly enhanced N-use efficiency, whereas P-use efficiency was greater in the non-inoculated plants in the irrigated treatment. With a P-induced demand for N, the plants nodulated prolifically and increased N supply from biological fixation. The physiological basis for N-2-fixing C. scoparius and C. striatus maintaining growth at low P supply and responding to greater P supply is through balanced acquisition of P and N for plant demand.
英文关键词	Cytisus sp. drought nitrogen nutrient-use efficiency phosphorus
类型	Article
语种	英语
国家	Spain ; South Africa
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000519580100005
WOS关键词	BROOM CYTISUS-SCOPARIUS ; VIRGILIA-DIVARICATA ; SONORAN DESERT ; USE EFFICIENCY ; WATER-STRESS ; SOIL ; FIXATION ; PHOSPHATE ; RESPONSES ; FYNBOS
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314034
作者单位	1.Univ Pablo de Olavide, Dept Phys Chem & Nat Syst, Seville 41701, Spain; 2.Stellenbosch Univ, Dept Bot & Zool, ZA-7602 Matieland, South Africa
推荐引用方式 GB/T 7714	Miguez-Montero, M. A.,Valentine, A.,Perez-Fernandez, M. A.. Regulatory effect of phosphorus and nitrogen on nodulation and plant performance of leguminous shrubs[J],2020,12(1).
APA	Miguez-Montero, M. A.,Valentine, A.,&Perez-Fernandez, M. A..(2020).Regulatory effect of phosphorus and nitrogen on nodulation and plant performance of leguminous shrubs.AOB PLANTS,12(1).
MLA	Miguez-Montero, M. A.,et al."Regulatory effect of phosphorus and nitrogen on nodulation and plant performance of leguminous shrubs".AOB PLANTS 12.1(2020).