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Identification of ACC Synthetase Genes in Saccharum and their Expression Profiles During Plant Growth and in Response to Low-nitrogen Stress

Identification of ACC Synthetase Genes in Saccharum and their Expression Profiles During Plant... Sugarcane (Saccharum spp.) is economically important in China. Ethylene is an important factor in regulating plant growth and sugar accumulation in sugarcane. 1-Aminocyclopropane-1-carboxylic acid synthase (ACS) is a rate-limiting enzyme in ethylene biosynthesis. However, knowledge of the ACS gene family of Saccharum is limited. In this study, we aimed to identify and analyze ACS genes in the genome of Saccharum. Bioinformatic analyses were performed to identify differences between the ACS sequences of Saccharum and homologous gene sequences of plants. The results showed that there were four ACS genes in the genome of Saccharum, and the phylogenetic tree revealed that the proteins encoded by these genes were similar to ACS isozymes with ACS activity in other plants. Evolutionary analyses suggested that the S. spontaneum ACS gene family may have expanded via segmental duplication events under purifying selection. Expression pattern analyses showed that the Saccharum ACS gene family was differentially expressed. ACS2 and ACS3 may be involved mainly in the development of various tissues during the vegetative growth stage and may be involved in the low-nitrogen response in sugarcane. These results provide relevant information to help determine the functions of the ACS genes in Saccharum, particularly the functions in regulating ethylene stimulation of abiotic stress and sugar productivity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tropical Plant Biology Springer Journals

Identification of ACC Synthetase Genes in Saccharum and their Expression Profiles During Plant Growth and in Response to Low-nitrogen Stress

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Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2022
ISSN
1935-9756
eISSN
1935-9764
DOI
10.1007/s12042-022-09316-8
Publisher site
See Article on Publisher Site

Abstract

Sugarcane (Saccharum spp.) is economically important in China. Ethylene is an important factor in regulating plant growth and sugar accumulation in sugarcane. 1-Aminocyclopropane-1-carboxylic acid synthase (ACS) is a rate-limiting enzyme in ethylene biosynthesis. However, knowledge of the ACS gene family of Saccharum is limited. In this study, we aimed to identify and analyze ACS genes in the genome of Saccharum. Bioinformatic analyses were performed to identify differences between the ACS sequences of Saccharum and homologous gene sequences of plants. The results showed that there were four ACS genes in the genome of Saccharum, and the phylogenetic tree revealed that the proteins encoded by these genes were similar to ACS isozymes with ACS activity in other plants. Evolutionary analyses suggested that the S. spontaneum ACS gene family may have expanded via segmental duplication events under purifying selection. Expression pattern analyses showed that the Saccharum ACS gene family was differentially expressed. ACS2 and ACS3 may be involved mainly in the development of various tissues during the vegetative growth stage and may be involved in the low-nitrogen response in sugarcane. These results provide relevant information to help determine the functions of the ACS genes in Saccharum, particularly the functions in regulating ethylene stimulation of abiotic stress and sugar productivity.

Journal

Tropical Plant BiologySpringer Journals

Published: Jun 2, 2022

Keywords: 1-aminocyclopropane-1-carboxylate synthase; Sugarcane; Expression pattern; Evolution; Abiotic stress

References