Endogenous Auxin Content Contributes to Larger Size of Apple Fruit

Fruit size is an important economic trait that is controlled by multiple genes. However, the regulatory mechanism for fruit size remains poorly understood. A bud sport variety of “Longfeng” (LF) apple (Malus domestica) was identified and named “Grand Longfeng” (GLF). The fruit size of GLF is larger...

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Main Authors:	Haidong Bu, Wenquan Yu, Hui Yuan, Pengtao Yue, Yun Wei, Aide Wang
Format:	Article
Language:	English
Published:	Frontiers Media S.A. 2020-12-01
Series:	Frontiers in Plant Science
Subjects:	apple fruit size cell size auxin MdTAR1 MdYUCCA6
Online Access:	https://www.frontiersin.org/articles/10.3389/fpls.2020.592540/full

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spelling	doaj-c6da96618ce24b4f82a49028fdae82a92021-01-14T06:47:39ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2020-12-011110.3389/fpls.2020.592540592540Endogenous Auxin Content Contributes to Larger Size of Apple FruitHaidong Bu0Haidong Bu1Wenquan Yu2Hui Yuan3Pengtao Yue4Yun Wei5Aide Wang6Key Laboratory of Fruit Postharvest Biology, College of Horticulture, Shenyang Agricultural University, Shenyang, ChinaMudanjiang Branch of Heilongjiang Academy of Agricultural Sciences, Mudanjiang, ChinaMudanjiang Branch of Heilongjiang Academy of Agricultural Sciences, Mudanjiang, ChinaKey Laboratory of Fruit Postharvest Biology, College of Horticulture, Shenyang Agricultural University, Shenyang, ChinaKey Laboratory of Fruit Postharvest Biology, College of Horticulture, Shenyang Agricultural University, Shenyang, ChinaKey Laboratory of Fruit Postharvest Biology, College of Horticulture, Shenyang Agricultural University, Shenyang, ChinaKey Laboratory of Fruit Postharvest Biology, College of Horticulture, Shenyang Agricultural University, Shenyang, ChinaFruit size is an important economic trait that is controlled by multiple genes. However, the regulatory mechanism for fruit size remains poorly understood. A bud sport variety of “Longfeng” (LF) apple (Malus domestica) was identified and named “Grand Longfeng” (GLF). The fruit size of GLF is larger than that of LF, and both varieties are diploid. We found that the cell size in GLF fruit was larger than that of LF. Then, we compared the fruit transcriptomes of the two varieties using RNA-Seq technology. A total of 1166 differentially expressed genes (DEGs) were detected between GLF and LF fruits. The KEGG analysis revealed that the phytohormone pathway was the most enriched, in which most of the DEGs were related to auxin signaling. Moreover, the endogenous auxin levels of GLF fruit were higher than those of LF. The expressions of auxin synthetic genes, including MdTAR1 and MdYUCCA6, were higher in GLF fruit than LF. Collectively, our findings suggest that auxin plays an important role in fruit size development.https://www.frontiersin.org/articles/10.3389/fpls.2020.592540/fullapplefruit sizecell sizeauxinMdTAR1MdYUCCA6
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Haidong Bu Haidong Bu Wenquan Yu Hui Yuan Pengtao Yue Yun Wei Aide Wang
spellingShingle	Haidong Bu Haidong Bu Wenquan Yu Hui Yuan Pengtao Yue Yun Wei Aide Wang Endogenous Auxin Content Contributes to Larger Size of Apple Fruit Frontiers in Plant Science apple fruit size cell size auxin MdTAR1 MdYUCCA6
author_facet	Haidong Bu Haidong Bu Wenquan Yu Hui Yuan Pengtao Yue Yun Wei Aide Wang
author_sort	Haidong Bu
title	Endogenous Auxin Content Contributes to Larger Size of Apple Fruit
title_short	Endogenous Auxin Content Contributes to Larger Size of Apple Fruit
title_full	Endogenous Auxin Content Contributes to Larger Size of Apple Fruit
title_fullStr	Endogenous Auxin Content Contributes to Larger Size of Apple Fruit
title_full_unstemmed	Endogenous Auxin Content Contributes to Larger Size of Apple Fruit
title_sort	endogenous auxin content contributes to larger size of apple fruit
publisher	Frontiers Media S.A.
series	Frontiers in Plant Science
issn	1664-462X
publishDate	2020-12-01
description	Fruit size is an important economic trait that is controlled by multiple genes. However, the regulatory mechanism for fruit size remains poorly understood. A bud sport variety of “Longfeng” (LF) apple (Malus domestica) was identified and named “Grand Longfeng” (GLF). The fruit size of GLF is larger than that of LF, and both varieties are diploid. We found that the cell size in GLF fruit was larger than that of LF. Then, we compared the fruit transcriptomes of the two varieties using RNA-Seq technology. A total of 1166 differentially expressed genes (DEGs) were detected between GLF and LF fruits. The KEGG analysis revealed that the phytohormone pathway was the most enriched, in which most of the DEGs were related to auxin signaling. Moreover, the endogenous auxin levels of GLF fruit were higher than those of LF. The expressions of auxin synthetic genes, including MdTAR1 and MdYUCCA6, were higher in GLF fruit than LF. Collectively, our findings suggest that auxin plays an important role in fruit size development.
topic	apple fruit size cell size auxin MdTAR1 MdYUCCA6
url	https://www.frontiersin.org/articles/10.3389/fpls.2020.592540/full
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Endogenous Auxin Content Contributes to Larger Size of Apple Fruit

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