Osmoregulatory and Antioxidants Modulation by Salicylic Acid and Methionine in Cowpea Plants under the Water Restriction

被引：9

作者：

Oliveira, Auta Paulina da Silva ^{[1
]}

Melo, Yuri Lima ^{[1
]}

de Alencar, Rayanne Silva ^{[1
]}

Viegas, Pedro Roberto Almeida ^{[2
]}

Dias, Guilherme Felix ^{[1
]}

Ferraz, Rener Luciano de Souza ^{[3
]}

Sa, Francisco Vanies da Silva ^{[4
]}

Dantas Neto, Jose ^{[5
]}

Magalhaes, Ivomberg Dourado ^{[6
]}

Gheyi, Hans Raj ^{[5
]}

de Lacerda, Claudivan Feitosa ^{[7
]}

de Melo, Alberto Soares ^{[1
]}

机构：

[1] Univ Estadual Paraiba, Ctr Biol & Hlth Sci, Campus 1, BR-58429500 Campina Grande, PB, Brazil

[2] Univ Fed Sergipe, Dept Agron, BR-49100000 Sao Cristovao, SE, Brazil

[3] Univ Fed Campina Grande, Acad Unit Dev Technol, BR-58540000 Sume, PB, Brazil

[4] Fed Rural Univ Semiarid, Dept Agron & Forest Sci, BR-59625900 Mossoro, RN, Brazil

[5] Univ Fed Campina Grande, Ctr Tecnol & Nat Resources, BR-58429900 Campina Grande, PB, Brazil

[6] Univ Fed Alagoas, Dept Agron, BR-57309005 Rio Largo, AL, Brazil

[7] Univ Fed Ceara, Dept Agron, BR-60020903 Fortaleza, CE, Brazil

来源：

PLANTS-BASEL | 2023年 / 12卷 / 06期

关键词：

Vigna unguiculata (L; ) Walp; antioxidant enzymes; drought tolerance; FOLIAR APPLICATION; VIGNA-UNGUICULATA; DROUGHT TOLERANCE; STRESS; PROLINE; DEFICIT; PHOTOSYNTHESIS; PEROXIDASE; CULTIVARS; RESPONSES;

D O I：

10.3390/plants12061341

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Global climate changes have intensified water stress in arid and semi-arid regions, reducing plant growth and yield. In this scenario, the present study aimed to evaluate the mitigating action of salicylic acid and methionine in cowpea cultivars under water restriction conditions. An experiment was conducted in a completely randomized design with treatments set up in a 2 x 5 factorial arrangement corresponding to two cowpea cultivars (BRS Novaera and BRS Pajeu) and five treatments of water replenishment, salicylic acid, and methionine. After eight days, water stress decreased the psi w, leaf area, and fresh mass and increased the total soluble sugars and catalase activity in the two cultivars. After sixteen days, water stress increased the activity of the superoxide dismutase and ascorbate peroxidase enzymes and decreased the total soluble sugars content and catalase activity of BRS Pajeu plants. This stress response was intensified in the BRS Pajeu plants sprayed with salicylic acid and the BRS Novaera plants with salicylic acid or methionine. BRS Pajeu is more tolerant to water stress than BRS Novaera; therefore, the regulations induced by the isolated application of salicylic acid and methionine were more intense in BRS Novaera, stimulating the tolerance mechanism of this cultivar to water stress.

引用

页数：16

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