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脂氧合酶介导的玉米对 和 感染抗性的功能研究。

Functional Study of Lipoxygenase-Mediated Resistance against and Infection in Maize.

机构信息

Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy.

C3A-Centro Agricoltura Alimenti Ambiente, Via Edmund Mach 1, 38098 San Michele all'Adige, Italy.

出版信息

Int J Mol Sci. 2022 Sep 17;23(18):10894. doi: 10.3390/ijms231810894.


DOI:10.3390/ijms231810894
PMID:36142806
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9503958/
Abstract

Mycotoxin contamination of maize kernels by fungal pathogens like and is a chronic global challenge impacting food and feed security, health, and trade. Maize genes () synthetize oxylipins that play defense roles and govern host-fungal interactions. The current study investigated the involvement of in maize resistance against these two fungi. A considerable intraspecific genetic and transcript variability of the ZmLOX family was highlighted by in silico analysis comparing publicly available maize pan-genomes and pan-transcriptomes, respectively. Then, phenotyping and expression analysis of genes along with key genes involved in oxylipin biosynthesis were carried out in a maize mutant carrying a Mu transposon insertion in the gene (named UFMu) together with Tzi18, Mo17, and W22 inbred lines at 3- and 7-days post-inoculation with and . Tzi18 showed the highest resistance to the pathogens coupled with the lowest mycotoxin accumulation, while UFMu was highly susceptible to both pathogens with the most elevated mycotoxin content. inoculation determined a stronger induction of and maize genes as compared to . Additionally, oxylipin analysis revealed prevalent linoleic (18:2) peroxidation by 9-LOXs, the accumulation of 10-oxo-11-phytoenoic acid (10-OPEA), and triglyceride peroxidation only in inoculated kernels of resistant genotypes.

摘要

真菌病原体如 和 对玉米颗粒的真菌毒素污染是一个全球性的慢性挑战,影响着粮食和饲料安全、健康和贸易。玉米 基因()合成的氧化脂类物质在防御中发挥作用,并控制宿主-真菌相互作用。本研究调查了 在玉米对这两种真菌的抗性中的作用。通过比较公开的玉米泛基因组和泛转录组的计算机分析,突出了 ZmLOX 家族的种内遗传和转录变异性很大。然后,在携带 Mu 转座子插入基因(命名为 UFMu)的玉米突变体以及 Tzi18、Mo17 和 W22 自交系中,对 基因以及参与氧化脂生物合成的关键基因进行表型和表达分析,在接种 和 后 3 天和 7 天。Tzi18 对病原体表现出最高的抗性,同时积累的真菌毒素最低,而 UFMu 对两种病原体都高度敏感,真菌毒素含量最高。与 相比, 接种决定了 和玉米 基因更强的诱导。此外,氧化脂分析显示,9-LOXs 普遍催化亚油酸(18:2)过氧化,10-氧代-11-植烯酸(10-OPEA)积累,以及仅在抗性基因型的 接种颗粒中甘油三酯过氧化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/62eb7d1aade5/ijms-23-10894-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/a68ea5bb7b4f/ijms-23-10894-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/ba10c06281a6/ijms-23-10894-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/2eb82910e009/ijms-23-10894-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/594a70b2f680/ijms-23-10894-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/34f3168818ca/ijms-23-10894-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/a0013e77a836/ijms-23-10894-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/2cc128558bd2/ijms-23-10894-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/21ed54b3b7d4/ijms-23-10894-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/e60c3cfb6437/ijms-23-10894-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/6c8df3bbb97b/ijms-23-10894-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/2b41059bf9c1/ijms-23-10894-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/62eb7d1aade5/ijms-23-10894-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/a68ea5bb7b4f/ijms-23-10894-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/ba10c06281a6/ijms-23-10894-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/2eb82910e009/ijms-23-10894-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/594a70b2f680/ijms-23-10894-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/34f3168818ca/ijms-23-10894-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/a0013e77a836/ijms-23-10894-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/2cc128558bd2/ijms-23-10894-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/21ed54b3b7d4/ijms-23-10894-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/e60c3cfb6437/ijms-23-10894-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/6c8df3bbb97b/ijms-23-10894-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/2b41059bf9c1/ijms-23-10894-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/565b/9503958/62eb7d1aade5/ijms-23-10894-g012.jpg

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[2]
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[3]
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[4]
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[5]
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本文引用的文献

[1]
Six Main Contributing Factors to High Levels of Mycotoxin Contamination in African Foods.

Toxins (Basel). 2022-4-29

[2]
Genomics and Pathways Involved in Maize Resistance to Ear Rot and Kernel Contamination With Fumonisins.

Front Plant Sci. 2022-5-2

[3]
Editorial: Oxylipins: The Front Line of Plant Interactions.

Front Plant Sci. 2022-3-28

[4]
The Potential of Fatty Acids and Their Derivatives as Antifungal Agents: A Review.

Toxins (Basel). 2022-3-3

[5]
and Co-Occurrence Influences Plant and Fungal Transcriptional Profiles in Maize Kernels and In Vitro.

Toxins (Basel). 2021-9-24

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Transcriptome and Oxylipin Profiling Joint Analysis Reveals Opposite Roles of 9-Oxylipins and Jasmonic Acid in Maize Resistance to Gibberella Stalk Rot.

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Predicted Aflatoxin B Increase in Europe Due to Climate Change: Actions and Reactions at Global Level.

Toxins (Basel). 2021-4-20

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Loss of Decreases Resistance in Maize Seedlings.

Genes (Basel). 2021-2-25

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