Genome-wide identification and expression pattern analysis of lipoxygenase gene family in banana

被引：38

作者：

Liu, Fan ^{[1
,2
]}

Li, Hua ^{[1
]}

Wu, Junwei ^{[1
,2
]}

Wang, Bin ^{[1
,2
]}

Tian, Na ^{[1
,2
]}

Liu, Jiapeng ^{[1
,2
]}

Sun, Xueli ^{[3
]}

Wu, Huan ^{[1
,2
]}

Huang, Yuji ^{[1
]}

Lu, Peitao ^{[1
]}

Cheng, Chunzhen ^{[1
,2
]}

机构：

[1] Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China

[2] Shanxi Agr Univ, Coll Hort, Taigu 030801, Peoples R China

[3] South China Agr Univ, Coll Life Sci, Guangzhou 510000, Peoples R China

来源：

SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

ABIOTIC STRESS; LOX GENES; VOLATILES PRODUCTION; FRUIT-DEVELOPMENT; HIGH-TEMPERATURE; ARABIDOPSIS; 13-LIPOXYGENASES; EVOLUTION; RESPONSES; JASMONATE;

D O I：

10.1038/s41598-021-89211-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The LOX genes have been identified and characterized in many plant species, but studies on the banana LOX genes are very limited. In this study, we respectively identified 18 MaLOX, 11 MbLOX, and 12 MiLOX genes from the Musa acuminata, M. balbisiana and M. itinerans genome data, investigated their gene structures and characterized the physicochemical properties of their encoded proteins. Banana LOXs showed a preference for using and ending with G/C and their encoded proteins can be classified into 9-LOX, Type I 13-LOX and Type II 13-LOX subfamilies. The expansion of the MaLOXs might result from the combined actions of genome-wide, tandem, and segmental duplications. However, tandem and segmental duplications contribute to the expansion of MbLOXs. Transcriptome data based gene expression analysis showed that MaLOX1, 4, and 7 were highly expressed in fruit and their expression levels were significantly regulated by ethylene. And 11, 12 and 7 MaLOXs were found to be low temperature-, high temperature-, and Fusarium oxysporum f. sp. Cubense tropical race 4 (FocTR4)-responsive, respectively. MaLOX8, 9 and 13 are responsive to all the three stresses, MaLOX4 and MaLOX12 are high temperature- and FocTR4-responsive; MaLOX6 and MaLOX17 are significantly induced by low temperature and FocTR4; and the expression of MaLOX7 and MaLOX16 are only affected by high temperature. Quantitative real-time PCR (qRT-PCR) analysis revealed that the expression levels of several MaLOXs are regulated by MeJA and FocTR4, indicating that they can increase the resistance of banana by regulating the JA pathway. Additionally, the weighted gene co-expression network analysis (WGCNA) of MaLOXs revealed 3 models respectively for 5 (MaLOX7-11), 3 (MaLOX6, 13, and 17), and 1 (MaLOX12) MaLOX genes. Our findings can provide valuable information for the characterization, evolution, diversity and functionality of MaLOX, MbLOX and MiLOX genes and are helpful for understanding the roles of LOXs in banana growth and development and adaptations to different stresses.

引用

页数：19

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