Salt stress in apple seedlings was mitigated by n-propyl dihydrojasmonate, a synthetic analog of jasmonic acid

IF 0.7 4区农林科学 Q4 HORTICULTURE

European Journal of Horticultural Science Pub Date : 2021-10-25 DOI:10.17660/ejhs.2021/86.5.12

L. Wang, S. Wang, H. Tomiyama, P. Opio, H. Ohara, K. Ohkawa, T. Saito, S. Kondo

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Abstract

tions and superoxide (SOD), peroxidase (POD) and catalase (CAT) activities, but increased the ion leakage, MDA, proline, and Na + concentrations, as well as the hydrogen peroxide (H 2 O 2 ) and endogenous JA and ABA concentrations in the leaves. Foliar application of PDJ before NaCl treatment (PDJ + NaCl + ) decreased Na + concentrations, ion leakage, MDA, proline accumulation and H 2 O 2 generation, but increased K + concentrations, antioxidant capacity, and chlorophyll concentrations in the leaves. In the PDJ + NaCl - group, although the JA and ABA concentrations and MdAOS1 , MdJAR , and MdNCED1 gene expressions were increased, the MdJAZ2 and MdCYP707A1 gene expressions were decreased. In addition, the PDJ + NaCl + group showed higher MdPDH , MdSOS1 , and MdNHX1 gene expressions and lower (cid:16)(cid:134)(cid:19)(cid:891)(cid:6)(cid:22) gene expressions than the PDJ - NaCl + group at 7 and 10 days after treatment. The present data suggested that PDJ application could in-duce rapidly endogenous JA and ABA, enhance SOD, POD, and CAT activities, decrease the Na + uptake, and mitigate NaCl stress.

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茉莉酸的合成类似物-二氢茉莉酸正丙酯可减轻苹果幼苗的盐胁迫

同时增加了叶片中离子泄漏量、MDA、脯氨酸和Na +浓度以及过氧化氢(h2o2)和内源JA、ABA浓度，提高了叶片超氧化物酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性。在NaCl处理前叶面施用PDJ (PDJ + NaCl +)可降低Na +浓度、离子泄漏、MDA、脯氨酸积累和h2o2生成，但可提高叶片K +浓度、抗氧化能力和叶绿素浓度。PDJ + NaCl -组JA、ABA浓度升高，MdAOS1、MdJAR、MdNCED1基因表达量升高，MdJAZ2、MdCYP707A1基因表达量降低。此外，PDJ + NaCl +组MdPDH、MdSOS1和MdNHX1基因表达量在处理后7和10 d均高于PDJ - NaCl +组，而(cid:16)(cid:134)(cid:19)(cid:891)(cid:6)(cid:22)基因表达量低于PDJ - NaCl +组。结果表明，施用PDJ能快速诱导内源JA和ABA，提高SOD、POD和CAT活性，降低Na +吸收，减轻NaCl胁迫。

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来源期刊

European Journal of Horticultural Science 农林科学-园艺

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

>36 weeks

期刊介绍： eJHS publishes original research articles and reviews on significant plant science discoveries and new or modified methodologies and technologies with a broad international and cross-disciplinary interest in the scope of global horticulture. eJHS focus is on applied and fundamental aspects of the entire food value chain, ranging from breeding, production, processing, trading to retailing of horticultural crops and commodities in temperate and Mediterranean regions. In particular eJHS emphasizes integrated crop management strategies during the preharvest and postharvest stages, aiming at sustainably increasing the quantity and quality of horticultural products. The eJHS publishes peer-reviewed articles, reviews and special thematic issues in the following science areas: breeding and genetic resources; clonal (micro)propagation and seed physiology; cropping systems, including crop management practices; plant/fruit growth and development, including interactions with environments and organisms; plant protection and plant nutrition; irrigation and plant water relation; whole plant physiology and source/sink relation; urban horticulture/protected cultivation; fruit ripening and product quality; storage technologies, including postharvest disorders; food processing technologies/horticultural engineering; marketing/economics; education and consultancy; consumer sciences.