换向Digitaria commata and Cenchrus ciliaris对水分胁迫的生化响应:抗氧化反应、脯氨酸和可溶性糖积累

IF 0.6 4区农林科学 Q4 AGRONOMY

Bioagro Pub Date : 2021-08-24 DOI:10.51372/bioagro333.3

Taoufik Amari, C. Abdelly

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引用次数: 2

摘要

研究了水分胁迫对Digitaria commuta和Cenchrus ciliaris植物抗氧化酶活性、脯氨酸、可溶性糖和类胡萝卜素含量的影响。在三个月的时间里，对植物使用了两种不同的浇水制度。水分胁迫降低了植物的总叶绿素含量，但增加了类胡萝卜素含量。有趣的是，PSII光化学的量子产率（Fv/Fm）没有观察到变化。丙二醛（MDA）含量在两种植物中均有较高程度的增加。除根中的过氧化氢酶外，所有研究的酶（过氧化物酶、过氧化氢酶和超氧化物歧化酶）的活性均增强。脯氨酸和可溶性糖含量在水分胁迫暴露后显著增加。两个物种之间没有发现明显的差异。结果表明，金花莲和毛白杨的耐旱性具有较好的抗氧化系统能力。此外，当暴露在干旱中时，它与渗透保护剂脯氨酸和可溶性糖的积累有关。

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Biochemical responses of Digitaria commutata and Cenchrus ciliaris to water stress: antioxidative reactions, proline and soluble sugars accumulation

The impact of water stress on antioxidant enzyme activities, proline, soluble sugars, and carotenoids contents found in Digitaria commutata and Cenchrus ciliaris plants was investigated. Two different watering regimes were used on plants over a period of three months. Water stress decreased total chlorophyll content in plants, but increased carotenoids content. Interestingly, no change was observed in the quantum yield of PSII photochemistry (Fv/Fm). Malondialdehyde (MDA) content increased to a higher extent in both species. Enhanced activities of all the enzymes (peroxidase, catalase, and superoxide dismutase) studied, except for catalase in the roots were observed. Proline and soluble sugars contents increased significantly following water stress exposure. No clear differences were found between both species. The results link drought tolerance of Digitaria commutata and Cenchrus ciliaris plants with better capabilities of anti-oxidative system. Additionally, it is linked to the accretion of osmoprotectants proline and soluble sugars when exposed to drought.

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来源期刊

Bioagro Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.40

自引率

37.50%

发文量

期刊介绍： Bioagro es una revista científica del Decanato de Agronomía de la Universidad Centroccidental “Lisandro Alvarado” (UCLA). Su periodicidad es cuatrimestral y se publica en los meses de enero, mayo y septiembre. Cada trabajo es revisado por al menos dos especialistas en el área, externos a la revista, de cuya opinión depende la aceptación definitiva. Se utiliza sistema de arbitraje doble ciego. La revista va dirigida, fundamental pero no exclusivamente, a profesionales y técnicos del área agrícola. Su objetivo es publicar trabajos científicos originales e inéditos en ciencias agrícolas que enfoquen aspectos de agronomía, botánica y propagación de plantas, entomología y zoología, suelos, fitopatología y protección vegetal, ingeniería agrícola, genética y mejoramiento de plantas, ecología, procesamiento de productos agrícolas, biotecnología y sociales. También pueden ser publicados artículos cortos en los que se presenten descubrimientos científicos, desarrollos tecnológicos y resultados de diagnósticos integrales, en la modalidad de Notas Técnicas. En Venezuela, se encuentra en las bibliotecas de todas las universidades e institutos de educación superior que ofrecen carreras agronómicas, así como de los entes oficiales de investigación agropecuaria. En el exterior, la revista llega a universidades y/o institutos de investigación agrícolas de todos los países de América Latina así como Estados Unidos, Canadá y España.