Effects of drought stress on seed germination and early seeding growth in Ferula ferulaeoides (Steud.) Korov.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-23 DOI:10.1007/s40415-023-00975-9

Ying Ma, Kai Liao, Yun Zhu, Xin Lu, Kuan Wang, Xue Rui Zhang

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Abstract

Ferula ferulaeoides (Steud.) Korov. is a well-known perennial herb whose growth and distribution are negatively affected by drought. However, the drought sensitivity of its seed germination stage and early seedling growth stage have not been studied in detail. In this study, PEG-6000 induced water deficiency conditions were perform to obverse the drought tolerance of seeds and seedlings of F. ferulaeoides. Data exhibited that the seed germination rate was reduced with elevated PEG-6000 concentrations and especially, no seeds germinated at a PEG-6000 concentration of 20%. Besides, water deficiency conditions altered the morphology of seedling leaf and root, which made the chloroplast of seedling leaf cells deformed and vacuolized and caused mitochondria structure damage in both tissues. The antioxidant parameters of seedlings under drought stress were further observed. Data exhibited that catalase, peroxidase, and superoxide dismutase responded rapidly under drought stress. The seedlings accumulated a large amount of malondialdehyde under high drought stress. Drought stress affected the accumulation of proline and photosynthetic pigments. In summary, the germination and seedling stage of F. ferulaeoides exhibited poorly environmental adaptability to drought stress, which mainly manifested in the water-dependent changes of seed survival rate, seedling morphology, physiological and biochemical indexes. Our results could provide guiding suggestions for future artificial cultivation.

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干旱胁迫对 Ferula ferulaeoides (Steud.) Korov 种子萌发和早期播种生长的影响

Ferula ferulaeoides (Steud.) Korov.是一种著名的多年生草本植物，其生长和分布受到干旱的不利影响。然而，对其种子萌发阶段和幼苗生长初期的干旱敏感性还没有详细研究。本研究通过 PEG-6000 诱导缺水条件来逆转铁线莲种子和幼苗的抗旱性。数据显示，PEG-6000 浓度越高，种子萌发率越低，尤其是当 PEG-6000 浓度为 20% 时，没有种子萌发。此外，缺水条件改变了幼苗叶片和根的形态，使幼苗叶片细胞的叶绿体畸形和空泡化，并造成两种组织线粒体结构的破坏。进一步观察了干旱胁迫下幼苗的抗氧化指标。数据显示，过氧化氢酶、过氧化物酶和超氧化物歧化酶在干旱胁迫下反应迅速。在高干旱胁迫下，幼苗积累了大量丙二醛。干旱胁迫影响了脯氨酸和光合色素的积累。综上所述，铁线莲的萌芽和幼苗期对干旱胁迫的环境适应性较差，主要表现在种子成活率、幼苗形态、生理生化指标等随水分的变化。我们的研究结果可为今后的人工栽培提供指导性建议。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.