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Abstract <p>The expression profile of the key carotenoid biosynthesis genes (<i>ZmPSY</i>1, <i>ZmPSY</i>2, <i>ZmLcyE</i>) was determined in the dynamics of cold stress and post-stress recovery in the leaves of <i>Zea mays</i> L. plants of four cold-tolerant (breeders’ data) inbred lines (L-5580-1, L-6097-1, L-5254-3, and L-5272-6). It was shown that, under normal growing conditions, the expression level of all three genes in the L-5580-1 line was significantly higher compared to other lines. It was revealed that low-temperature exposure affects the trends of gene expression fluctuations in a similar way between the lines. It was determined that, in the stress dynamics, the co-expression pattern of the <i>ZmPSY</i>1 and <i>ZmPSY</i>2 genes in the leaves of L-5580-1 plants is coordinated with changes in the carotenoid content.</p>

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Expression Level of Carotenoid Biosynthesis Genes in Leaves Is Associated with Cold Tolerance of Zea mays L. Plants

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • D. Kh. Arkhestova,
  • E. Z. Kochieva,
  • A. V. Shchennikova

摘要

Abstract

The expression profile of the key carotenoid biosynthesis genes (ZmPSY1, ZmPSY2, ZmLcyE) was determined in the dynamics of cold stress and post-stress recovery in the leaves of Zea mays L. plants of four cold-tolerant (breeders’ data) inbred lines (L-5580-1, L-6097-1, L-5254-3, and L-5272-6). It was shown that, under normal growing conditions, the expression level of all three genes in the L-5580-1 line was significantly higher compared to other lines. It was revealed that low-temperature exposure affects the trends of gene expression fluctuations in a similar way between the lines. It was determined that, in the stress dynamics, the co-expression pattern of the ZmPSY1 and ZmPSY2 genes in the leaves of L-5580-1 plants is coordinated with changes in the carotenoid content.