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首页> 外文期刊>Acta Physiologiae Plantarum >Different proline responses of two Algerian durum wheat cultivars to in vitro salt stress
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Different proline responses of two Algerian durum wheat cultivars to in vitro salt stress

机译：两种阿尔及利亚杜兰麦小麦品种对体外盐胁迫的不同脯氨酸响应

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摘要

Durum wheat, Triticum turgidum subsp. durum (Desf.) Husn., is one of the most salt-sensitive cereal crops, but the physiological responses of different cultivars to salt stress vary. Cultivars that are suited to arid conditions like in Algeria may not necessarily be tolerant to increased salinity. When 10-day seedlings of Algerian durum wheat varieties Hedba 3 (HD3) and Mohamed Ben Bachir (MBB) were subjected to salt stress, they accumulated proline and expressed stress-related and proline metabolism genes in a classic salt-stress response. Expression of the selective sodium transporter genes HKT1;4-1 and -2 was found to be organ-specific and modulated by salt stress in both cultivars. Adding proline to the salt-containing growth medium alleviated some salt stress effects such as decrease in water content, ion leakage and expression oxidative stress markers while growth parameters were partially rescued to different extents in the two cultivars. Durum wheat seedlings accumulated sodium ions (Na+) at the expense of potassium ions (K+) under salt stress which lowered the in planta K+/Na+ ratio. The two durum wheat cultivars studied here respond differently to salt stress in terms of responsiveness to proline, HKT1;4 gene expression, and Na+ and K+ accumulation. Notably, salt stress can be partially alleviated by proline in the drought-resistant cultivar MBB, even though it is relatively salt sensitive.
机译：杜兰姆小麦，Triticum turgidum subsp。杜兰姆（DESF。）HUSN。，是最盐敏感的谷物作物之一，但不同品种对盐胁迫的生理反应变化。适合于阿尔及利亚的干旱条件的栽培品种可能不一定是耐受性盐度的耐受性。当阿尔及利亚杜姆米小麦品种HedBA 3（HD3）和Mohamed Ben Bachir（MBB）的10天幼苗进行盐胁迫时，它们在经典的盐应激反应中积累了脯氨酸并表达了应力相关和脯氨酸代谢基因。选择性钠转运蛋白基因HKT1; 4-1和-2的表达是用盐胁迫的器官特异性和调节。将脯氨酸添加到含盐的生长培养基中，减轻了一些盐胁迫效应，例如含水含量，离子泄漏和表达氧化应激标记物，而生长参数部分刚刚被拯救到两种品种的不同范围内。杜兰姆小麦幼苗在盐胁迫下以钾离子（k +）的牺牲累积钠离子（Na +），降低了植物钾k + / na +的比例。在此研究的两种杜兰姆小麦品种在对脯氨酸，HKT1的反应性方面对盐胁迫进行了不同的反应。值得注意的是，即使它是相对盐敏感的，盐胁迫可以通过脯氨酸部分地减轻脯氨酸。

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  • 来源
    《Acta Physiologiae Plantarum》 |2020年第2期|共16页
  • 作者

    Ami Katia; Planchais Severine; Cabassa Cecile; Guivarch Anne; Very Anne-Alienor; Khelifi Majda; Djebbar Reda; Abrous-Belbachir Ouzna; Carol Pierre;

  • 作者单位

    Univ Paris Diderot Inst Ecol &

    Environm Sci Paris IEES Sorbonne Univ UMR 7618 CNRS INRA IRD UPEC 4 Pl Jussieu F-75252 Paris France;

    Univ Paris Diderot Inst Ecol &

    Environm Sci Paris IEES Sorbonne Univ UMR 7618 CNRS INRA IRD UPEC 4 Pl Jussieu F-75252 Paris France;

    Univ Paris Diderot Inst Ecol &

    Environm Sci Paris IEES Sorbonne Univ UMR 7618 CNRS INRA IRD UPEC 4 Pl Jussieu F-75252 Paris France;

    Univ Paris Diderot Inst Ecol &

    Environm Sci Paris IEES Sorbonne Univ UMR 7618 CNRS INRA IRD UPEC 4 Pl Jussieu F-75252 Paris France;

    Univ Montpellier BPMP CNRS INRA SupAgro Montpellier France;

    ENSA Algiers Algeria;

    Univ Sci &

    Technol Houari Boumed Lab Biol &

    Physiol Organisms BP 32 Algiers 16111 Algeria;

    Univ Sci &

    Technol Houari Boumed Lab Biol &

    Physiol Organisms BP 32 Algiers 16111 Algeria;

    Univ Paris Diderot Inst Ecol &

    Environm Sci Paris IEES Sorbonne Univ UMR 7618 CNRS INRA IRD UPEC 4 Pl Jussieu F-75252 Paris France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物学;
  • 关键词

    Durum wheat; Triticum turgidum; Salt stress; Proline; HKT; In vitro;

    机译：杜兰姆小麦;Triticum Turgidum;盐胁迫;脯氨酸;HKT;体外;

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