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Maize chilling KR701 hei8834 LC-MS/MS

ABSTRACT: Two inbred lines with different resistance, which are chilling tolerant KR701 and chilling sensitive hei8834, to undergo quantitative proteomics analysis under chilling stress at the one- and three-leaf stages, respectively.

INSTRUMENT(S): Orbitrap Fusion

ORGANISM(S): Zea Mays (maize)

TISSUE(S): Leaf

SUBMITTER: Jinpeng Zou

LAB HEAD: Zecheng Zuo

PROVIDER: PXD023426 | Pride | 2022-05-19

REPOSITORIES: Pride

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Publications

Comparative Proteomics Combined with Morphophysiological Analysis Revealed Chilling Response Patterns in Two Contrasting Maize Genotypes.

Zou Jinpeng J Yang Liang L Li Yuhong Y Piao Mingxin M Li Yaxing Y Yao Nan N Zhang Xiaohong X Zhang Qian Q Hu Guanghui G Yang Deguang D Zuo Zecheng Z

Cells 20220413 8

Maize yield is significantly influenced by low temperature, particularly chilling stress at the maize seedling stage. Various physiological approaches have been established to resist chilling stress; however, the detailed proteins change patterns underlying the maize chilling stress response at the seedling stage remain unknown, preventing the development of breeding-based methods to resist chilling stress in maize. Thus, we performed comprehensive physiological, comparative proteomics and speci ...[more]

PMID: 35456000

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Gene expression profiling in three inbred lines of maize affected by chilling treatment

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Project description:Purpose: The goal of this analysis is that to reveal the different expression pattern in chilling-tolerant and chilling susceptible lines under chilling stress.Chilling is a major stress to plants of subtropical and tropical origins including maize. To reveal molecular mechanisms underlying chilling tolerance and chilling survival, we investigated maize transcriptome responses to chilling stress in differentiated leaves and roots as well as in crowns with meristem activity for survival. Chilling stress on maize shoots and roots is found to each contribute to seedling lethality in maize. Comparison of maize lines with different chilling tolerance capacity reveals that chilling survival in maize is highly associated with upregulation in leaves and crowns of abscisic acid response pathway, transcriptional regulators and metal ion transporters as well as downregulation of heat response in crowns. Comparison of chilling treatment on whole and part of the plants reveals that response to distal-chilling is very distinct from, and sometimes opposite to, response to local- or whole-plant chilling in both leaves and roots, suggesting a communication between shoots and roots in environmental perception. In sum, this study details chilling responses in leaves, roots and crowns and reveals potential chilling survival mechanism in maize, which lays ground for further understanding survival and tolerance mechanisms under low but non-freezing temperatures in tropical and subtropical plants.

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