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抗氧化活性、脱落酸水平和渗透胁迫下苹果和樱桃体外培养物中渗透物积累的复杂分析。

Complex Analysis of Antioxidant Activity, Abscisic Acid Level, and Accumulation of Osmotica in Apple and Cherry In Vitro Cultures under Osmotic Stress.

机构信息

Research and Breeding Institute of Pomology Ltd., Holovousy 129, 50801 Hořice, Czech Republic.

Department of Biology, Faculty of Science, University of Hradec Kralove, Rokitanskeho 62, 50003 Hradec Kralove, Czech Republic.

出版信息

Int J Mol Sci. 2021 Jul 25;22(15):7922. doi: 10.3390/ijms22157922.

DOI:10.3390/ijms22157922
PMID:34360688
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8347229/
Abstract

Plant response to osmotic stress is a complex issue and includes a wide range of physiological and biochemical processes. Extensive studies of known cultivars and their reaction to drought or salinity stress are very important for future breeding of new and tolerant cultivars. Our study focused on the antioxidant activity, accumulations of osmotica, and the content of abscisic acid in apple (cv. "Malinové holovouské", "Fragrance", "Rubinstep", "Idared", "Car Alexander") and cherry (cv. "Regina", "Napoleonova", "Kaštánka", "Sunburst", "P-HL-C") cultivated in vitro on media containing different levels of polyethylene glycol PEG-6000. Our results indicated that the studied genotypes responded differently to osmotic stress manifested as reduction in the leaf relative water content (RWC) and increment in the activities of antioxidant enzymes, proline, sugars, and abscisic acid content. Overall, cherry cultivars showed a smaller decrease in percentage RWC and enzymatic activities, but enhanced proline content compared to the apple plants cultivars. Cultivars "Rubinstep", "Napoleonova", and "Kaštánka" exhibited higher antioxidant capacity and accumulation of osmoprotectants like proline and sorbitol that can be associated with the drought-tolerance system.

摘要

植物对渗透胁迫的反应是一个复杂的问题，包括广泛的生理和生化过程。对已知品种及其对干旱或盐胁迫的反应进行广泛研究，对未来培育新的耐旱品种非常重要。我们的研究重点是抗氧化活性、渗透物质的积累以及苹果（品种“Malinové holovouské”、“Fragrance”、“Rubinstep”、“Idared”、“Car Alexander”）和樱桃（品种“Regina”、“Napoleonova”、“Kaštánka”、“Sunburst”、“P-HL-C”）在含有不同水平聚乙二醇 PEG-6000 的培养基上离体培养时的抗氧化活性、渗透物质的积累以及脱落酸含量。我们的结果表明，研究的基因型对渗透胁迫的反应不同，表现为叶片相对含水量（RWC）降低和抗氧化酶、脯氨酸、糖和脱落酸含量增加。总的来说，与苹果品种相比，樱桃品种的 RWC 百分比和酶活性下降较小，但脯氨酸含量增加。品种“Rubinstep”、“Napoleonova”和“Kaštánka”表现出更高的抗氧化能力和渗透保护物质（如脯氨酸和山梨醇）的积累，这可能与耐旱系统有关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/2145815992bc/ijms-22-07922-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/32b153849a3c/ijms-22-07922-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/548e51c215bf/ijms-22-07922-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/b7ee5e88ff65/ijms-22-07922-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/e6d4c14def5d/ijms-22-07922-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/85f7d585eadb/ijms-22-07922-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/3eea384954c8/ijms-22-07922-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/2145815992bc/ijms-22-07922-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/32b153849a3c/ijms-22-07922-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/548e51c215bf/ijms-22-07922-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/b7ee5e88ff65/ijms-22-07922-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/e6d4c14def5d/ijms-22-07922-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/85f7d585eadb/ijms-22-07922-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/3eea384954c8/ijms-22-07922-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a440/8347229/2145815992bc/ijms-22-07922-g007.jpg

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