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Article

Comparative Transcriptome Analysis Revealing the Different Germination Process in Aryloxyphenoxypropionate-Resistant and APP-Susceptible Asia Minor Bluegrass (Polypogon fugax)

State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 311400, China
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Author to whom correspondence should be addressed.
Plants 2020, 9(9), 1191; https://doi.org/10.3390/plants9091191
Received: 29 June 2020 / Revised: 8 September 2020 / Accepted: 8 September 2020 / Published: 12 September 2020
(This article belongs to the Special Issue Weed Ecology and Management)
Herbicide-resistant mutations are predicted to exhibit fitness cost under herbicide-free conditions. Asia minor bluegrass (Polypogon fugax) is a common weed species in the winter crops. Our previous study established a P. fugax accession (LR) resistant to aryloxyphenoxypropionate (APP) herbicides, which also exhibited germination delay relative to the susceptible accession (LS). A comparative transcriptome was conducted to analyze the gene expression profile of LS and LR at two germination time points. A total of 11,856 and 23,123 differentially expressed genes (DEGs) were respectively identified in LS and LR. Most DEGs were involved in lipid metabolism, carbohydrate metabolism, amino acid metabolism, and secondary metabolites biosynthesis. Twenty-four genes involved in carbohydrate and fatty acid metabolism had higher relative expression levels in LS than LR during germination. Nine genes involved in gibberellin (GA) and abscisic acid (ABA) signal transduction showed different expression patterns in LS and LR, consistent with their different sensitivity to exogenous hormones treatments. This study first provided insight into transcriptional changes and interaction in the seed germination process of P. fugax. It compared the differential expression profile between APP herbicides resistance and susceptible accessions during germination, which contributed to understanding the association between herbicide resistance and fitness cost. View Full-Text
Keywords: fitness cost; carbohydrate metabolism; fatty acid metabolism; hormone regulation fitness cost; carbohydrate metabolism; fatty acid metabolism; hormone regulation
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MDPI and ACS Style

Yu, X.; Tang, W.; Yang, Y.; Zhang, J.; Lu, Y. Comparative Transcriptome Analysis Revealing the Different Germination Process in Aryloxyphenoxypropionate-Resistant and APP-Susceptible Asia Minor Bluegrass (Polypogon fugax). Plants 2020, 9, 1191. https://doi.org/10.3390/plants9091191

AMA Style

Yu X, Tang W, Yang Y, Zhang J, Lu Y. Comparative Transcriptome Analysis Revealing the Different Germination Process in Aryloxyphenoxypropionate-Resistant and APP-Susceptible Asia Minor Bluegrass (Polypogon fugax). Plants. 2020; 9(9):1191. https://doi.org/10.3390/plants9091191

Chicago/Turabian Style

Yu, Xiaoyue, Wei Tang, Yongjie Yang, Jianping Zhang, and Yongliang Lu. 2020. "Comparative Transcriptome Analysis Revealing the Different Germination Process in Aryloxyphenoxypropionate-Resistant and APP-Susceptible Asia Minor Bluegrass (Polypogon fugax)" Plants 9, no. 9: 1191. https://doi.org/10.3390/plants9091191

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