Is the inherent potential of maize roots efficient for soil phosphorus acquisition?

Sustainable agriculture requires improved phosphorus (P) management to reduce the overreliance on P fertilization. Despite intensive research of root adaptive mechanisms for improving P acquisition, the inherent potential of roots for efficient P acquisition remains unfulfilled, especially in intens...

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Autores principales:	Yan Deng, Keru Chen, Wan Teng, Ai Zhan, Yiping Tong, Gu Feng, Zhenling Cui, Fusuo Zhang, Xinping Chen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/00d1f4db94c349a69aeff86ce9ad1ae9
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spelling	oai:doaj.org-article:00d1f4db94c349a69aeff86ce9ad1ae92021-11-18T08:30:10ZIs the inherent potential of maize roots efficient for soil phosphorus acquisition?1932-620310.1371/journal.pone.0090287https://doaj.org/article/00d1f4db94c349a69aeff86ce9ad1ae92014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24594677/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Sustainable agriculture requires improved phosphorus (P) management to reduce the overreliance on P fertilization. Despite intensive research of root adaptive mechanisms for improving P acquisition, the inherent potential of roots for efficient P acquisition remains unfulfilled, especially in intensive agriculture, while current P management generally focuses on agronomic and environmental concerns. Here, we investigated how levels of soil P affect the inherent potential of maize (Zea mays L.) roots to obtain P from soil. Responses of root morphology, arbuscular mycorrhizal colonization, and phosphate transporters were characterized and related to agronomic traits in pot and field experiments with soil P supply from deficiency to excess. Critical soil Olsen-P level for maize growth approximated 3.2 mg kg(-1), and the threshold indicating a significant environmental risk was about 15 mg kg(-1), which represented the lower and upper levels of soil P recommended in current P management. However, most root adaptations involved with P acquisition were triggered when soil Olsen-P was below 10 mg kg(-1), indicating a threshold for maximum root inherent potential. Therefore, to maintain efficient inherent potential of roots for P acquisition, we suggest that the target upper level of soil P in intensive agriculture should be reduced from the environmental risk threshold to the point maximizing the inherent potential of roots.Yan DengKeru ChenWan TengAi ZhanYiping TongGu FengZhenling CuiFusuo ZhangXinping ChenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e90287 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yan Deng Keru Chen Wan Teng Ai Zhan Yiping Tong Gu Feng Zhenling Cui Fusuo Zhang Xinping Chen Is the inherent potential of maize roots efficient for soil phosphorus acquisition?
description	Sustainable agriculture requires improved phosphorus (P) management to reduce the overreliance on P fertilization. Despite intensive research of root adaptive mechanisms for improving P acquisition, the inherent potential of roots for efficient P acquisition remains unfulfilled, especially in intensive agriculture, while current P management generally focuses on agronomic and environmental concerns. Here, we investigated how levels of soil P affect the inherent potential of maize (Zea mays L.) roots to obtain P from soil. Responses of root morphology, arbuscular mycorrhizal colonization, and phosphate transporters were characterized and related to agronomic traits in pot and field experiments with soil P supply from deficiency to excess. Critical soil Olsen-P level for maize growth approximated 3.2 mg kg(-1), and the threshold indicating a significant environmental risk was about 15 mg kg(-1), which represented the lower and upper levels of soil P recommended in current P management. However, most root adaptations involved with P acquisition were triggered when soil Olsen-P was below 10 mg kg(-1), indicating a threshold for maximum root inherent potential. Therefore, to maintain efficient inherent potential of roots for P acquisition, we suggest that the target upper level of soil P in intensive agriculture should be reduced from the environmental risk threshold to the point maximizing the inherent potential of roots.
format	article
author	Yan Deng Keru Chen Wan Teng Ai Zhan Yiping Tong Gu Feng Zhenling Cui Fusuo Zhang Xinping Chen
author_facet	Yan Deng Keru Chen Wan Teng Ai Zhan Yiping Tong Gu Feng Zhenling Cui Fusuo Zhang Xinping Chen
author_sort	Yan Deng
title	Is the inherent potential of maize roots efficient for soil phosphorus acquisition?
title_short	Is the inherent potential of maize roots efficient for soil phosphorus acquisition?
title_full	Is the inherent potential of maize roots efficient for soil phosphorus acquisition?
title_fullStr	Is the inherent potential of maize roots efficient for soil phosphorus acquisition?
title_full_unstemmed	Is the inherent potential of maize roots efficient for soil phosphorus acquisition?
title_sort	is the inherent potential of maize roots efficient for soil phosphorus acquisition?
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/00d1f4db94c349a69aeff86ce9ad1ae9
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Is the inherent potential of maize roots efficient for soil phosphorus acquisition?

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