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首页> 外文期刊>Pakistan journal of botany >Metabolic pathways analysis and identification of heat response genes of pineapple [ Ananas comosus (L.) Merr.] fruit affected by elevated postharvest temperature
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Metabolic pathways analysis and identification of heat response genes of pineapple [ Ananas comosus (L.) Merr.] fruit affected by elevated postharvest temperature

机译：菠萝升高温度影响的菠萝热响应基因的代谢途径分析及鉴定[ananas comosus（l。）水果

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Pineapple [ Ananas comosus (L.) Merr.] is an important tropical fruit. The pineapple fruits that are ripened in the high-temperature season have better quality, whereas those ripened in low-temperature season are acidic in taste. Elevated postharvest temperature (EPT) could enhance the quality of winter-harvested pineapple fruit. Based on transcriptome and differentially expressed genes analysis, we explored the GO (Gene Ontology) terms and KEGG (Kyoto Encyclopedia of Genes and Genomes) metabolic pathways associated with the EPT treatment and the differentially expressed heat response genes of pineapple fruit after EPT treatment. GO classifications suggested that DEGs (differentially expressed genes) were predominantly annotated to “response to stimulus”, “response to external stimulus” and “aromatic compound biosynthetic process” in the biological process ontology, “hydrolase activity” and “glucosidase activity” in the molecular function ontology, as well as “intrinsic to membrane” and “cell wall” in the cellular component ontology. KEGG metabolic pathways analysis revealed that the DEGs were dominantly enriched to “starch and sucrose metabolism”, “biosynthesis of secondary metabolites”, “pentose and glucuronate interconversions”, “carotenoid biosynthesis”, “metabolic pathways” “galactose metabolism” and “plant hormone signal transduction”. Nineteen HSP (heat shock protein) and sHSP (small HSP) DEGs were screened, and most of them were up-regulated by EPT. Most of the transcription factor genes, including HSF , bHLH , WRKY , MYB , AP2/ERF , bZIP and NAC , were down-regulated by EPT. The SOD (Superoxide dismutase) genes were induced by EPT, while most of the POD (Peroxidase) and CAT (Catalase) genes were repressed. This work would help to understand the molecular mechanisms for EPT process to improve the quality of pineapple fruits.
机译：菠萝[ananas comosus（l。）merr。]是一个重要的热带水果。在高温季节成熟的菠萝水果具有更好的质量，而在低温季节成熟的水果是酸性的酸性。升高的采后温度（EPT）可以提高冬季收获的菠萝果实的质量。基于转录组和差异表达的基因分析，我们探讨了与EPT治疗相关的GO（基因本体论）术语和KEGG（基因群和基因组的基因组织和基因组）的代谢途径和EPT治疗后菠萝果实的差异表达的热响应基因。去分类表明，DEGS（差异表达基因）主要被注释为“对刺激刺激”，“对外部刺激的反应”和“芳香族化合物生物合成过程”在生物过程本体中，“水解酶活性”和“葡萄糖苷酶活性”中分子功能本体，以及“细胞组分本体中的”细胞壁“和”细胞壁“。 Kegg代谢途径分析表明，DEGS致力于富集为“淀粉和蔗糖代谢”，“次级代谢物生物合成”，“戊类和葡糖醛酸酯互联网”，“类胡萝卜素生物合成”，“代谢途径”“半乳糖代谢”和“植物激素”信号转导”。筛选了十九个HSP（热休克蛋白）和SHSP（小HSP）DEG，其中大部分由EPT上调。大多数转录因子基因，包括HSF，BHLH，WRKY，MYB，AP2 / ERF，BZIP和NAC，通过EPT下调。通过EPT诱导SOD（超氧化物歧化酶）基因，而大多数荚（过氧化物酶）和猫（过氧化氢酶）基因被抑制。这项工作有助于了解EPT过程的分子机制，以提高菠萝水果的质量。

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