Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor

The NAC designation is derived from petunia (Petunia hybrida) gene NO APICAL MERISTEM (NAM) and Arabidopsis genes ATAF1/ATAF2 and CUP-SHAPED COTYLEDON2 (CUC2), which belongs to the family of plant-specific transcription factors (TFs), and plays important role in plant development processes, such as...

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Main Authors: Li Zhang, Lei Yao, Ning Zhang, Jiangwei Yang, Xi Zhu, Xun Tang, Alejandro Calderón-Urrea, Huaijun Si
Format: Article
Language:English
Published: Frontiers Media S.A. 2018-03-01
Series:Frontiers in Plant Science
Subjects:
Online Access:http://journal.frontiersin.org/article/10.3389/fpls.2018.00383/full
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author Li Zhang
Li Zhang
Lei Yao
Lei Yao
Ning Zhang
Ning Zhang
Jiangwei Yang
Jiangwei Yang
Xi Zhu
Xi Zhu
Xun Tang
Xun Tang
Alejandro Calderón-Urrea
Alejandro Calderón-Urrea
Huaijun Si
Huaijun Si
author_facet Li Zhang
Li Zhang
Lei Yao
Lei Yao
Ning Zhang
Ning Zhang
Jiangwei Yang
Jiangwei Yang
Xi Zhu
Xi Zhu
Xun Tang
Xun Tang
Alejandro Calderón-Urrea
Alejandro Calderón-Urrea
Huaijun Si
Huaijun Si
author_sort Li Zhang
collection DOAJ
description The NAC designation is derived from petunia (Petunia hybrida) gene NO APICAL MERISTEM (NAM) and Arabidopsis genes ATAF1/ATAF2 and CUP-SHAPED COTYLEDON2 (CUC2), which belongs to the family of plant-specific transcription factors (TFs), and plays important role in plant development processes, such as response to biotic and abiotic stress, and hormone signaling. MicroRNAs (miRNAs) are a class of small, non-coding endogenous RNAs which play versatile and significant role in plant stress response and development via negatively affecting gene expression at a post-transcriptional level. Here, we showed that Stu-mi164 had a complementary sequence in the CDS sequence of potato NAC TFs, and that NAC expression exhibited significant differences under osmotic stress. We measured expression levels of the Stu-mi164 target gene StNAC262 between control and PEG-treated plants using real-time PCR, and the results demonstrated that they had inverse relationship. We suggested that Stu-miR164 might drive overexpression of NAC gene under osmotic stress in potato. To confirm the regulation of NAC TFs by Stu-mi164, we developed transgenic plants, using Agrobacterium tumefaciens–mediated transformation, of the potato cultivars “Gannongshu 2” and “Kexin 3” overexpressing the Stu-mi164 or the TF StNAC262. Real-time PCR analysis of transgenic potato plants under osmotic (PEG) stress, showed that potato plants overexpressing Stu-mi164 had reduced expression of StNAC262 and their osmotic resistance decreased. Furthermore, these plants had low number of lateral roots although the same length as the control. Our findings support the regulatory role of Stu-miRNAs in controlling plant response to osmotic stress via StNAC262.
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spelling doaj.art-72777fac3f6e44baba26a53b13a90d122022-12-22T00:31:32ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2018-03-01910.3389/fpls.2018.00383336941Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription FactorLi Zhang0Li Zhang1Lei Yao2Lei Yao3Ning Zhang4Ning Zhang5Jiangwei Yang6Jiangwei Yang7Xi Zhu8Xi Zhu9Xun Tang10Xun Tang11Alejandro Calderón-Urrea12Alejandro Calderón-Urrea13Huaijun Si14Huaijun Si15Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaGansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaGansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaGansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaGansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaGansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaCollege of Plant Protection, Gansu Agricultural University, Lanzhou, ChinaDepartment of Biology, California State University, Fresno, CA, United StatesGansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Genetic and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, ChinaCollege of Life Science and Technology, Gansu Agricultural University, Lanzhou, ChinaThe NAC designation is derived from petunia (Petunia hybrida) gene NO APICAL MERISTEM (NAM) and Arabidopsis genes ATAF1/ATAF2 and CUP-SHAPED COTYLEDON2 (CUC2), which belongs to the family of plant-specific transcription factors (TFs), and plays important role in plant development processes, such as response to biotic and abiotic stress, and hormone signaling. MicroRNAs (miRNAs) are a class of small, non-coding endogenous RNAs which play versatile and significant role in plant stress response and development via negatively affecting gene expression at a post-transcriptional level. Here, we showed that Stu-mi164 had a complementary sequence in the CDS sequence of potato NAC TFs, and that NAC expression exhibited significant differences under osmotic stress. We measured expression levels of the Stu-mi164 target gene StNAC262 between control and PEG-treated plants using real-time PCR, and the results demonstrated that they had inverse relationship. We suggested that Stu-miR164 might drive overexpression of NAC gene under osmotic stress in potato. To confirm the regulation of NAC TFs by Stu-mi164, we developed transgenic plants, using Agrobacterium tumefaciens–mediated transformation, of the potato cultivars “Gannongshu 2” and “Kexin 3” overexpressing the Stu-mi164 or the TF StNAC262. Real-time PCR analysis of transgenic potato plants under osmotic (PEG) stress, showed that potato plants overexpressing Stu-mi164 had reduced expression of StNAC262 and their osmotic resistance decreased. Furthermore, these plants had low number of lateral roots although the same length as the control. Our findings support the regulatory role of Stu-miRNAs in controlling plant response to osmotic stress via StNAC262.http://journal.frontiersin.org/article/10.3389/fpls.2018.00383/fullmiRNANACosmotic stresslateral rootpotato
spellingShingle Li Zhang
Li Zhang
Lei Yao
Lei Yao
Ning Zhang
Ning Zhang
Jiangwei Yang
Jiangwei Yang
Xi Zhu
Xi Zhu
Xun Tang
Xun Tang
Alejandro Calderón-Urrea
Alejandro Calderón-Urrea
Huaijun Si
Huaijun Si
Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor
Frontiers in Plant Science
miRNA
NAC
osmotic stress
lateral root
potato
title Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor
title_full Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor
title_fullStr Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor
title_full_unstemmed Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor
title_short Lateral Root Development in Potato Is Mediated by Stu-mi164 Regulation of NAC Transcription Factor
title_sort lateral root development in potato is mediated by stu mi164 regulation of nac transcription factor
topic miRNA
NAC
osmotic stress
lateral root
potato
url http://journal.frontiersin.org/article/10.3389/fpls.2018.00383/full
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