脱落酸诱导的小麦和小麦激素系统对土壤干旱的响应

IF 0.8 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Zemdirbyste-agriculture Pub Date : 2023-08-03 DOI:10.13080/z-a.2023.110.014

I. Kosakivska, L. Voytenko, V. Vasyuk, M. Shcherbatiuk

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引用次数: 0

摘要

研究了干旱胁迫下脱落酸(ABA) (10 ~ 6 M)对冬小麦(Triticum aestivum L.)和斯佩尔特小麦(T. spelta L.)植株生长和激素稳态的影响。试验以干旱胁迫(4 d不灌溉)下18 d水萌发(c -植株)和ABA +启动(ABA +植株)植株和恢复后21 d植株为研究对象。干旱胁迫下，ABA +处理植株的根长、根系鲜重和干重增加，茎高和根系粗重降低。在土壤干旱条件下，灌入ABA增加了T. aestium和T. spelta植株中ABA的积累。而在T. spelta ABA +植株中，ABA含量是T. aestivum的2.2倍。恢复后，两种植物的ABA含量均有所下降。干旱胁迫降低了ABA +植株的吲哚乙酸(IAA)含量，而增加了T. spelta植株的IAA含量。ABA +胁迫下两种植物的IAA含量均比c -胁迫植株高1.6倍。恢复后，IAA在ABA +植株中均有积累。ABA +胁迫下，赤霉素(GA 3)含量分别比c胁迫下的赤霉素(GA 3)含量高123.4%和24.2%。ABA +恢复植株中GA - 3含量高于c -植株。处理后的水杨酸(SA)含量比处理前分别增加5.5%和62.8%。胁迫下的黄颡鱼和白颡鱼ABA +植株的CK含量没有恢复到胁迫С-plants的水平，恢复后CK含量分别降低了43%和56.8%。观察了各处理CK形态的变化。综上所述，在土壤干旱胁迫下，灌入ABA能促进小麦和小麦根系生长，并与土壤干旱胁迫下植物激素系统的变化有关。实验结果表明，ABA引发的植物内源激素平衡的长期变化与干旱胁迫反应的形成有关。

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Abscisic acid-induced response of Triticum aestivum and T. spelta phytohormonal system to moderate soil drought

The effect of abscisic acid (ABA) priming (10 −6 M) on the growth and hormonal homeostasis of winter wheat ( Triticum aestivum L.) and spelt wheat ( T. spelta L.) plants after drought stress was analysed. During the experiment, 18-day-old water-germinated (C-plants) and ABA-primed (ABA + -plants) plants exposed to drought stress (4 days without irrigation) and 21-day-old plants after recovery were studied. Drought-stressed ABA + -plants showed increased length, fresh (FW) and dry (DW) weight of roots and decreased shoot height and FW compared to C-plants. Priming with ABA increased the accumulation of ABA in T. aestivum and T. spelta plants during soil drought. However, in T. spelta ABA + -plants, the ABA content was 2.2-fold greater than in T. aestivum . After recovery, the ABA content in both species decreased. Drought stress decreased indole acetic acid (IAA) content in T. aestivum ABA + -plants but increased in T. spelta ones. The IAA content in stressed ABA + -plants of both species was 1.6-fold higher compared to stressed C-plants. After recovery, IAA accumulated in both ABA + -plants. In stressed T. aestivum and T. spelta ABA + -plants, gibberellic acid (GA 3 ) content was 123.4% and 24.2% higher compared to C-plants. In recovered ABA + -plants, GA 3 content was higher than in C-plants. The content of salicylic acid (SA) in stressed T. aestivum and T. spelta ABA + -plants increased by 5.5% and 62.8%, respectively. Total cytokinin (CK) content in stressed T. aestivum and T. spelta ABA + -plants did not recover the level of stressed С-plants and after recovery was lower by 43% and 56.8%, respectively. Changes in CK forms in all treatments of the experiment were observed. Overall, the priming of T. aestivum and T. spelta seeds with ABA improved root growth and was associated with changes in the hormonal system of soil drought-stressed plants. The results of the experiment suggest that long-term changes in the balance of endogenous phytohormones caused by the ABA priming are related with the formation of drought stress response.

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来源期刊

Zemdirbyste-agriculture AGRICULTURE, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Zemdirbyste-Agriculture is a quarterly scientific journal which covers a wide range of topics in the field of agricultural sciences, agronomy. It publishes articles of original research findings in the English language in the field of agronomy (soil and crop management, crop production, plant protection, plant breeding and genetics, biotechnology, plant nutrition, agrochemistry, soil science, microbiology etc.) and related areas. Articles are peer-reviewed. Review, debating papers as well as those of a methodological nature will also be considered.