<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>

Flooding is a significant stress to land plants, depriving them of essential oxygen. Plants have evolved diverse strategies with variable success to survive flooding. Similar strategies have been described in organisms from other kingdoms. Several fungal species can successfully survive a low-oxygen...

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Autores principales:	Geunmuk Im, Dongsu Choi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ALS BCAA low oxygen flooding <i>AIP1</i> Botany QK1-989
Acceso en línea:	https://doaj.org/article/15be4d7925574b45bc80f3db7092526b
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id	oai:doaj.org-article:15be4d7925574b45bc80f3db7092526b
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spelling	oai:doaj.org-article:15be4d7925574b45bc80f3db7092526b2021-11-25T18:44:14Z<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>10.3390/plants101122512223-7747https://doaj.org/article/15be4d7925574b45bc80f3db7092526b2021-10-01T00:00:00Zhttps://www.mdpi.com/2223-7747/10/11/2251https://doaj.org/toc/2223-7747Flooding is a significant stress to land plants, depriving them of essential oxygen. Plants have evolved diverse strategies with variable success to survive flooding. Similar strategies have been described in organisms from other kingdoms. Several fungal species can successfully survive a low-oxygen environment by increasing their branched-chain amino acid (BCAA) contents. BCAAs may act as alternative electron acceptors in the respiratory chain under an oxygen-limited environment. The key and first enzyme for BCAA biosynthesis is acetolactate synthase (ALS). We identified two homologous genes encoding the small subunit of ALS in Arabidopsis (<i>Arabidopsis thaliana</i>). We determined that <i>ALS INTERACTING PROTEIN1</i> (<i>AIP1</i>), which encodes the small subunit of ALS, is strongly expressed in all organs and highly expressed under submergence and low-oxygen stresses. We also showed that the overexpression of <i>AIP1</i> confers tolerance to low-oxygen stress. These results indicate that ALS may play an essential role under prolonged flooding or oxygen deficiency in Arabidopsis.Geunmuk ImDongsu ChoiMDPI AGarticleALSBCAAlow oxygenflooding<i>AIP1</i>BotanyQK1-989ENPlants, Vol 10, Iss 2251, p 2251 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ALS BCAA low oxygen flooding <i>AIP1</i> Botany QK1-989
spellingShingle	ALS BCAA low oxygen flooding <i>AIP1</i> Botany QK1-989 Geunmuk Im Dongsu Choi <i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>
description	Flooding is a significant stress to land plants, depriving them of essential oxygen. Plants have evolved diverse strategies with variable success to survive flooding. Similar strategies have been described in organisms from other kingdoms. Several fungal species can successfully survive a low-oxygen environment by increasing their branched-chain amino acid (BCAA) contents. BCAAs may act as alternative electron acceptors in the respiratory chain under an oxygen-limited environment. The key and first enzyme for BCAA biosynthesis is acetolactate synthase (ALS). We identified two homologous genes encoding the small subunit of ALS in Arabidopsis (<i>Arabidopsis thaliana</i>). We determined that <i>ALS INTERACTING PROTEIN1</i> (<i>AIP1</i>), which encodes the small subunit of ALS, is strongly expressed in all organs and highly expressed under submergence and low-oxygen stresses. We also showed that the overexpression of <i>AIP1</i> confers tolerance to low-oxygen stress. These results indicate that ALS may play an essential role under prolonged flooding or oxygen deficiency in Arabidopsis.
format	article
author	Geunmuk Im Dongsu Choi
author_facet	Geunmuk Im Dongsu Choi
author_sort	Geunmuk Im
title	<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>
title_short	<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>
title_full	<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>
title_fullStr	<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>
title_full_unstemmed	<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>
title_sort	<i>aip1</i>, encoding the small subunit of acetolactate synthase, is partially responsible for resistance to hypoxic stress in <i>arabidopsis thaliana</i>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/15be4d7925574b45bc80f3db7092526b
work_keys_str_mv	AT geunmukim iaip1iencodingthesmallsubunitofacetolactatesynthaseispartiallyresponsibleforresistancetohypoxicstressiniarabidopsisthalianai AT dongsuchoi iaip1iencodingthesmallsubunitofacetolactatesynthaseispartiallyresponsibleforresistancetohypoxicstressiniarabidopsisthalianai
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<i>AIP1</i>, Encoding the Small Subunit of Acetolactate Synthase, Is Partially Responsible for Resistance to Hypoxic Stress in <i>Arabidopsis thaliana</i>

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