Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress

Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress

Indole-3-acetic acid (IAA) is hormones in higher plants and participates in plant growth regulation and stress resistance including Al stress. The reduction of root apex aluminum (Al) content by exogenous IAA treatment was hypothesized to be effective in alleviating the adverse effect of high Al con...

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Autores principales: Wang,Q, Nian,F, Zhao,L, Li,F, Yang,H, Yang,Y
Lenguaje:English
Publicado: Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:
Aluminum toxicity
indole-3-acetic acid
malic acid
rhizosphere pH
PM H+-ATPase
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000300002
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spelling oai:scielo:S0718-951620130003000022014-09-16Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stressWang,QNian,FZhao,LLi,FYang,HYang,Y Aluminum toxicity indole-3-acetic acid malic acid rhizosphere pH PM H+-ATPase Indole-3-acetic acid (IAA) is hormones in higher plants and participates in plant growth regulation and stress resistance including Al stress. The reduction of root apex aluminum (Al) content by exogenous IAA treatment was hypothesized to be effective in alleviating the adverse effect of high Al concentration in wheat root growth. To investigate the role of IAA in lowering root apex Al content, Al-tolerant wheat (ET8) was studied in Al solution (50 µM), co-treated with IAA (25 µM) and anion channel inhibitors (5 µM NIF or A9C) or IAA transport inhibitors (5 µM TIBA or NPA) under acidic condition for 24 h. Treatments were as fellows: control (0.5 µM CaCl2), Al (50 µM), Al (50 µM) + IAA (25 µM), Al (50 µM) + IAA (25 µM) + NIF (or A9C, 5 mM), Al (50 µM) + NPA (or TIBA, 5 µM). Al content in root apex, rhizosphere pH and PM H+-ATPase activity were studied. The results showed that co-treatment with IAA reduced root apex Al content by 42% compared to Al treatment. Anion channel inhibitors enhanced the accumulation of Al in root apex by 27% (or 32%) (NIF or A9C), while addition of IAA neutralized its promoting effect. The co-treatment with IAA increased rhizosphere pH by alleviating the decrease of plasma membrane H+-ATPase activity, while IAA transport inhibitors (NPA or TIBA) suppressed the elevation of rhizosphere pH. The current results suggested that IAA could be effective in alleviating Al toxicity through reducing Al accumulation in wheat root apex.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.3 20132013-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000300002en10.4067/S0718-95162013005000042
institution Scielo Chile
collection Scielo Chile
language English
topic Aluminum toxicity
indole-3-acetic acid
malic acid
rhizosphere pH
PM H+-ATPase
spellingShingle Aluminum toxicity
indole-3-acetic acid
malic acid
rhizosphere pH
PM H+-ATPase
Wang,Q
Nian,F
Zhao,L
Li,F
Yang,H
Yang,Y
Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress
description Indole-3-acetic acid (IAA) is hormones in higher plants and participates in plant growth regulation and stress resistance including Al stress. The reduction of root apex aluminum (Al) content by exogenous IAA treatment was hypothesized to be effective in alleviating the adverse effect of high Al concentration in wheat root growth. To investigate the role of IAA in lowering root apex Al content, Al-tolerant wheat (ET8) was studied in Al solution (50 µM), co-treated with IAA (25 µM) and anion channel inhibitors (5 µM NIF or A9C) or IAA transport inhibitors (5 µM TIBA or NPA) under acidic condition for 24 h. Treatments were as fellows: control (0.5 µM CaCl2), Al (50 µM), Al (50 µM) + IAA (25 µM), Al (50 µM) + IAA (25 µM) + NIF (or A9C, 5 mM), Al (50 µM) + NPA (or TIBA, 5 µM). Al content in root apex, rhizosphere pH and PM H+-ATPase activity were studied. The results showed that co-treatment with IAA reduced root apex Al content by 42% compared to Al treatment. Anion channel inhibitors enhanced the accumulation of Al in root apex by 27% (or 32%) (NIF or A9C), while addition of IAA neutralized its promoting effect. The co-treatment with IAA increased rhizosphere pH by alleviating the decrease of plasma membrane H+-ATPase activity, while IAA transport inhibitors (NPA or TIBA) suppressed the elevation of rhizosphere pH. The current results suggested that IAA could be effective in alleviating Al toxicity through reducing Al accumulation in wheat root apex.
author Wang,Q
Nian,F
Zhao,L
Li,F
Yang,H
Yang,Y
author_facet Wang,Q
Nian,F
Zhao,L
Li,F
Yang,H
Yang,Y
author_sort Wang,Q
title Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress
title_short Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress
title_full Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress
title_fullStr Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress
title_full_unstemmed Exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (Triticum aestivum L.) under Al stress
title_sort exogenous indole-3-acetic acid could reduce the accumulation of aluminum in root apex of wheat (triticum aestivum l.) under al stress
publisher Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate 2013
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000300002
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AT lif exogenousindole3aceticacidcouldreducetheaccumulationofaluminuminrootapexofwheattriticumaestivumlunderalstress
AT yangh exogenousindole3aceticacidcouldreducetheaccumulationofaluminuminrootapexofwheattriticumaestivumlunderalstress
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