Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics

Selenium (Se) is a beneficial trace element for certain animals including humans, while remaining controversial for plants. High Se concentration in soil is toxic to plants especially at seedling stage of the plants. Although, arbuscular mycorrhizal fungi (AMF) are important for plant stress resista...

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Autores principales:	Chenyu Sun, Yisen Yang, Muhammad Zeeshan, Shengfeng Qin, Junqing Ma, Lu Liu, Juan Yang, Xunbo Zhou, Jinghua Huang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Se bioavailability Se related ion transporter Arbuscular mycorrhizal fungi Maize Environmental pollution TD172-193.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/23d01e11518346da93929413dc73ea78
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spelling	oai:doaj.org-article:23d01e11518346da93929413dc73ea782021-11-22T04:16:42ZArbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics0147-651310.1016/j.ecoenv.2021.113000https://doaj.org/article/23d01e11518346da93929413dc73ea782021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S014765132101112Xhttps://doaj.org/toc/0147-6513Selenium (Se) is a beneficial trace element for certain animals including humans, while remaining controversial for plants. High Se concentration in soil is toxic to plants especially at seedling stage of the plants. Although, arbuscular mycorrhizal fungi (AMF) are important for plant stress resistance; but the mechanisms by which AMF alleviate Se stress in crop seedlings are unclear. Therefore, we investigated the potential strategies of AMF symbiosis to alleviate Se stress in maize (Zea mays) from plants and soil perspectives. Results showed that Se stress (Se application level > 5 mg kg−1) significantly inhibited leaf area, shoot dry weight, and root dry weight of maize (P < 0.05). In contrast, AM symbiosis significantly improved root morphology, increased nitrogen and phosphorus nutrition, promoted shoot growth, inhibited the transport of Se from soil/roots to shoots, and then diluted the concentration of Se in shoots (32.65–52.80%). In general, the response of maize growth to AMF was mainly observed in shoots rather than roots. In addition, AMF inoculation significantly increased the easily extractable glomalin-related soil protein and organic matter contents and decreased the availability of soil Se to the plant. Principal component analysis showed that AMF promoted growth and nutrition uptake of maize was the most dominant effect of Se stress alleviation, followed by the decrease of soil Se availability, limiting Se transport from soil/roots to shoots. Moreover, the expression of Se uptake-related ion transporter genes (ZmPht2, ZmNIP2;1, and ZmSultr1;3) in maize roots were down-regulated upon AM symbiosis which resultantly inhibited the uptake and transport of Se from soil to maize roots. Thus, AMF could impede Se stress in maize seedlings by improving plant and soil characteristics.Chenyu SunYisen YangMuhammad ZeeshanShengfeng QinJunqing MaLu LiuJuan YangXunbo ZhouJinghua HuangElsevierarticleSe bioavailabilitySe related ion transporterArbuscular mycorrhizal fungiMaizeEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 228, Iss , Pp 113000- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Se bioavailability Se related ion transporter Arbuscular mycorrhizal fungi Maize Environmental pollution TD172-193.5 Environmental sciences GE1-350
spellingShingle	Se bioavailability Se related ion transporter Arbuscular mycorrhizal fungi Maize Environmental pollution TD172-193.5 Environmental sciences GE1-350 Chenyu Sun Yisen Yang Muhammad Zeeshan Shengfeng Qin Junqing Ma Lu Liu Juan Yang Xunbo Zhou Jinghua Huang Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics
description	Selenium (Se) is a beneficial trace element for certain animals including humans, while remaining controversial for plants. High Se concentration in soil is toxic to plants especially at seedling stage of the plants. Although, arbuscular mycorrhizal fungi (AMF) are important for plant stress resistance; but the mechanisms by which AMF alleviate Se stress in crop seedlings are unclear. Therefore, we investigated the potential strategies of AMF symbiosis to alleviate Se stress in maize (Zea mays) from plants and soil perspectives. Results showed that Se stress (Se application level > 5 mg kg−1) significantly inhibited leaf area, shoot dry weight, and root dry weight of maize (P < 0.05). In contrast, AM symbiosis significantly improved root morphology, increased nitrogen and phosphorus nutrition, promoted shoot growth, inhibited the transport of Se from soil/roots to shoots, and then diluted the concentration of Se in shoots (32.65–52.80%). In general, the response of maize growth to AMF was mainly observed in shoots rather than roots. In addition, AMF inoculation significantly increased the easily extractable glomalin-related soil protein and organic matter contents and decreased the availability of soil Se to the plant. Principal component analysis showed that AMF promoted growth and nutrition uptake of maize was the most dominant effect of Se stress alleviation, followed by the decrease of soil Se availability, limiting Se transport from soil/roots to shoots. Moreover, the expression of Se uptake-related ion transporter genes (ZmPht2, ZmNIP2;1, and ZmSultr1;3) in maize roots were down-regulated upon AM symbiosis which resultantly inhibited the uptake and transport of Se from soil to maize roots. Thus, AMF could impede Se stress in maize seedlings by improving plant and soil characteristics.
format	article
author	Chenyu Sun Yisen Yang Muhammad Zeeshan Shengfeng Qin Junqing Ma Lu Liu Juan Yang Xunbo Zhou Jinghua Huang
author_facet	Chenyu Sun Yisen Yang Muhammad Zeeshan Shengfeng Qin Junqing Ma Lu Liu Juan Yang Xunbo Zhou Jinghua Huang
author_sort	Chenyu Sun
title	Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics
title_short	Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics
title_full	Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics
title_fullStr	Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics
title_full_unstemmed	Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics
title_sort	arbuscular mycorrhizal fungi reverse selenium stress in zea mays seedlings by improving plant and soil characteristics
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/23d01e11518346da93929413dc73ea78
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Arbuscular mycorrhizal fungi reverse selenium stress in Zea mays seedlings by improving plant and soil characteristics

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