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甘氨酸甜菜碱（天然和合成）对干旱胁迫下玉米（L.）植株生长、代谢及产量的影响

Influence of Glycine Betaine (Natural and Synthetic) on Growth, Metabolism and Yield Production of Drought-Stressed Maize ( L.) Plants.

作者信息

Shafiq Sidra, Akram Nudrat Aisha, Ashraf Muhammad, García-Caparrós Pedro, Ali Omar M, Latef Arafat Abdel Hamed Abdel

机构信息

Department of Botany, Government College University, Faisalabad 38000, Pakistan.

Department of Botany, University of Agriculture, Faisalabad 38000, Pakistan.

出版信息

Plants (Basel). 2021 Nov 22;10(11):2540. doi: 10.3390/plants10112540.

DOI:10.3390/plants10112540
PMID:34834903
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8619370/
Abstract

A study was carried out to evaluate the effectiveness of sugar beet extract (SBE) and glycine betaine (GB) in mitigating the adverse effects of drought stress on two maize cultivars. Seeds (caryopses) of two maize cultivars, Sadaf (drought-tolerant) and Sultan (drought-sensitive) were sown in plastic pots. Plants were subjected to different (100%, 75% and 60% field capacity (FC)) water regimes. Then, different levels of SBE (3% and 4%) and GB (3.65 and 3.84 g/L) were applied as a foliar spray after 30 days of water deficit stress. Drought stress significantly decreased plant growth and yield attributes, chlorophyll pigments, while it increased relative membrane permeability (RMP), levels of osmolytes (GB and proline), malondialdehyde (MDA), total phenolics and ascorbic acid as well as the activities of superoxide dismutase (SOD) and peroxidase (POD) enzymes in both maize cultivars. Exogenous application via foliar spray with SBR or GB improved plant growth and yield attributes, chlorophyll pigments, osmolyte concentration, total phenolics, ascorbic acid and the activities of reactive oxygen species (ROS) scavenging enzymes (SOD, POD and catalase; CAT), but reduced leaf RMP and MDA concentration. The results obtained in this study exhibit the role of foliar-applied biostimulants (natural and synthetic compounds) in enhancing the growth and yield of maize cultivars by upregulating the oxidative defense system and osmoprotectant accumulation under water deficit conditions.

摘要

开展了一项研究，以评估甜菜提取物（SBE）和甘氨酸甜菜碱（GB）在减轻干旱胁迫对两个玉米品种的不利影响方面的有效性。将两个玉米品种Sadaf（耐旱）和Sultan（干旱敏感）的种子（颖果）播种在塑料盆中。对植株进行不同的水分处理（100%、75%和60%的田间持水量（FC））。然后，在水分亏缺胁迫30天后，以不同水平的SBE（3%和4%）和GB（3.65和3.84 g/L）进行叶面喷施。干旱胁迫显著降低了两个玉米品种的植株生长和产量性状、叶绿素色素含量，同时增加了相对膜透性（RMP）、渗透调节物质（GB和脯氨酸）、丙二醛（MDA）、总酚和抗坏血酸的含量，以及超氧化物歧化酶（SOD）和过氧化物酶（POD）的活性。通过叶面喷施SBR或GB进行外源施用改善了植株生长和产量性状、叶绿素色素、渗透调节物质浓度、总酚、抗坏血酸以及活性氧（ROS）清除酶（SOD、POD和过氧化氢酶；CAT）的活性，但降低了叶片的RMP和MDA浓度。本研究获得的结果表明，叶面施用生物刺激剂（天然和合成化合物）在水分亏缺条件下通过上调氧化防御系统和渗透保护剂积累来提高玉米品种的生长和产量方面的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/31a49c807d8d/plants-10-02540-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/d45e00be2df0/plants-10-02540-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/22ae34a1a8e5/plants-10-02540-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/bc99e8e94224/plants-10-02540-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/210963fa1f4c/plants-10-02540-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/f008167dd49a/plants-10-02540-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/b3e59ddf3a46/plants-10-02540-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/31a49c807d8d/plants-10-02540-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/d45e00be2df0/plants-10-02540-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/22ae34a1a8e5/plants-10-02540-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/bc99e8e94224/plants-10-02540-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/210963fa1f4c/plants-10-02540-g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/b3e59ddf3a46/plants-10-02540-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2289/8619370/31a49c807d8d/plants-10-02540-g007.jpg

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