黑麦-杜伦麦 1BL.1RS 易位:对耐旱性和营养状况的影响。

IF 5.4 2区 生物学 Q1 PLANT SCIENCES
Giulia Quagliata, Moez Maghrebi, Miriam Marín-Sanz, Samuela Palombieri, Francesco Sestili, Domenico Lafiandra, Francisco Barro, Gianpiero Vigani, Stefania Astolfi
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引用次数: 0

摘要

研究表明,将黑麦的短染色体臂 1RS 易位到普通小麦的 1B 染色体上可提高抗逆性和产量。在此,我们对硬粒小麦进行了易位,并评估了其对抗旱性的影响。将 1BL.1RS 易位系(Svevo 1BL.1RS)和相应的 Svevo 对照暴露于干旱中 7 天。在对照和干旱条件下,Svevo 和 Svevo 1BL.1RS 的根系形态存在显著差异。虽然与 Svevo 相比,Svevo 1BL.1RS 因干旱而受到的生长抑制更严重,但它对氧化应激的恢复能力更强。此外,只有在易位品系中,芽和根中的几个干旱响应基因都上调了。值得注意的是,在 Svevo 1BL.1RS 的根中,这些基因在对照条件下的表达量也高于 Svevo,这表明这些基因在易位系中可能以更高的水平组成表达。此外,1BL.1RS 易位对植物在干旱条件下积累养分的能力有显著影响。总之,对硫酸盐积累及其同化途径相关基因表达的影响尤其值得注意,这突出表明硫参与了植物对水分胁迫的响应。此外,Svevo 1BL.1RS 的遗传特性分析还揭示了位于干旱胁迫响应基因中的变异,这些变异超出了易位的范围。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rye-durum wheat 1BL.1RS translocation: implications for drought tolerance and nutritional status.

The translocation of the short chromosome arm 1RS of rye onto the 1B chromosome of common wheat has been shown to improve resistance to stress and yield. Here, translocation was operated in durum wheat and its effects on drought tolerance were evaluated. Both the 1BL.1RS translocation line (Svevo 1BL.1RS) and the corresponding Svevo control were exposed to drought for 7 days. Significant differences were found in root morphology between Svevo and Svevo 1BL.1RS under control and drought conditions. Although Svevo 1BL.1RS experienced more severe growth inhibition due to drought than Svevo, it exhibited greater resilience to oxidative stress. Furthermore, several drought-responsive genes were upregulated in both shoots and roots only in the translocation line. Notably, in roots of Svevo 1BL.1RS, the expression of these genes was also higher in the control condition compared to Svevo, suggesting that these genes could be constitutively expressed at higher levels in the translocation line. Moreover, the 1BL.1RS translocation had a significant impact on the plant's ability to accumulate nutrients under drought. Overall, the impact on sulfate accumulation and the expression of genes associated with its assimilation pathways are particularly noteworthy, highlighting the involvement of sulfur in the plant response to water stress. Additionally, the genetic characterization of Svevo 1BL.1RS revealed variants extending beyond the translocation, located in drought stress-responsive genes.

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来源期刊
Physiologia plantarum
Physiologia plantarum 生物-植物科学
CiteScore
11.00
自引率
3.10%
发文量
224
审稿时长
3.9 months
期刊介绍: Physiologia Plantarum is an international journal committed to publishing the best full-length original research papers that advance our understanding of primary mechanisms of plant development, growth and productivity as well as plant interactions with the biotic and abiotic environment. All organisational levels of experimental plant biology – from molecular and cell biology, biochemistry and biophysics to ecophysiology and global change biology – fall within the scope of the journal. The content is distributed between 5 main subject areas supervised by Subject Editors specialised in the respective domain: (1) biochemistry and metabolism, (2) ecophysiology, stress and adaptation, (3) uptake, transport and assimilation, (4) development, growth and differentiation, (5) photobiology and photosynthesis.
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