Association and linkage analysis of aluminum tolerance genes in maize.

<h4>Background</h4>Aluminum (Al) toxicity is a major worldwide constraint to crop productivity on acidic soils. Al becomes soluble at low pH, inhibiting root growth and severely reducing yields. Maize is an important staple food and commodity crop in acidic soil regions, especially in So...

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Autores principales:	Allison M Krill, Matias Kirst, Leon V Kochian, Edward S Buckler, Owen A Hoekenga
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/48ed33f1a9b04806bd4134b5c9610c42
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spelling	oai:doaj.org-article:48ed33f1a9b04806bd4134b5c9610c422021-11-25T06:24:49ZAssociation and linkage analysis of aluminum tolerance genes in maize.1932-620310.1371/journal.pone.0009958https://doaj.org/article/48ed33f1a9b04806bd4134b5c9610c422010-04-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20376361/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Aluminum (Al) toxicity is a major worldwide constraint to crop productivity on acidic soils. Al becomes soluble at low pH, inhibiting root growth and severely reducing yields. Maize is an important staple food and commodity crop in acidic soil regions, especially in South America and Africa where these soils are very common. Al exclusion and intracellular tolerance have been suggested as two important mechanisms for Al tolerance in maize, but little is known about the underlying genetics.<h4>Methodology</h4>An association panel of 282 diverse maize inbred lines and three F2 linkage populations with approximately 200 individuals each were used to study genetic variation in this complex trait. Al tolerance was measured as net root growth in nutrient solution under Al stress, which exhibited a wide range of variation between lines. Comparative and physiological genomics-based approaches were used to select 21 candidate genes for evaluation by association analysis.<h4>Conclusions</h4>Six candidate genes had significant results from association analysis, but only four were confirmed by linkage analysis as putatively contributing to Al tolerance: Zea mays AltSB like (ZmASL), Zea mays aluminum-activated malate transporter2 (ALMT2), S-adenosyl-L-homocysteinase (SAHH), and Malic Enzyme (ME). These four candidate genes are high priority subjects for follow-up biochemical and physiological studies on the mechanisms of Al tolerance in maize. Immediately, elite haplotype-specific molecular markers can be developed for these four genes and used for efficient marker-assisted selection of superior alleles in Al tolerance maize breeding programs.Allison M KrillMatias KirstLeon V KochianEdward S BucklerOwen A HoekengaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 4, p e9958 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Allison M Krill Matias Kirst Leon V Kochian Edward S Buckler Owen A Hoekenga Association and linkage analysis of aluminum tolerance genes in maize.
description	<h4>Background</h4>Aluminum (Al) toxicity is a major worldwide constraint to crop productivity on acidic soils. Al becomes soluble at low pH, inhibiting root growth and severely reducing yields. Maize is an important staple food and commodity crop in acidic soil regions, especially in South America and Africa where these soils are very common. Al exclusion and intracellular tolerance have been suggested as two important mechanisms for Al tolerance in maize, but little is known about the underlying genetics.<h4>Methodology</h4>An association panel of 282 diverse maize inbred lines and three F2 linkage populations with approximately 200 individuals each were used to study genetic variation in this complex trait. Al tolerance was measured as net root growth in nutrient solution under Al stress, which exhibited a wide range of variation between lines. Comparative and physiological genomics-based approaches were used to select 21 candidate genes for evaluation by association analysis.<h4>Conclusions</h4>Six candidate genes had significant results from association analysis, but only four were confirmed by linkage analysis as putatively contributing to Al tolerance: Zea mays AltSB like (ZmASL), Zea mays aluminum-activated malate transporter2 (ALMT2), S-adenosyl-L-homocysteinase (SAHH), and Malic Enzyme (ME). These four candidate genes are high priority subjects for follow-up biochemical and physiological studies on the mechanisms of Al tolerance in maize. Immediately, elite haplotype-specific molecular markers can be developed for these four genes and used for efficient marker-assisted selection of superior alleles in Al tolerance maize breeding programs.
format	article
author	Allison M Krill Matias Kirst Leon V Kochian Edward S Buckler Owen A Hoekenga
author_facet	Allison M Krill Matias Kirst Leon V Kochian Edward S Buckler Owen A Hoekenga
author_sort	Allison M Krill
title	Association and linkage analysis of aluminum tolerance genes in maize.
title_short	Association and linkage analysis of aluminum tolerance genes in maize.
title_full	Association and linkage analysis of aluminum tolerance genes in maize.
title_fullStr	Association and linkage analysis of aluminum tolerance genes in maize.
title_full_unstemmed	Association and linkage analysis of aluminum tolerance genes in maize.
title_sort	association and linkage analysis of aluminum tolerance genes in maize.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/48ed33f1a9b04806bd4134b5c9610c42
work_keys_str_mv	AT allisonmkrill associationandlinkageanalysisofaluminumtolerancegenesinmaize AT matiaskirst associationandlinkageanalysisofaluminumtolerancegenesinmaize AT leonvkochian associationandlinkageanalysisofaluminumtolerancegenesinmaize AT edwardsbuckler associationandlinkageanalysisofaluminumtolerancegenesinmaize AT owenahoekenga associationandlinkageanalysisofaluminumtolerancegenesinmaize
_version_	1718413740473319424

Association and linkage analysis of aluminum tolerance genes in maize.

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