The response of Mo-hydroxylases and abscisic acid to salinity in wheat genotypes with differing tolerances

• Autorzy: Xu H. , Zhai J. , Liu Y. , Cheng X. , Xia Z. , Chen F. , Cui D. , Jiang X.
• Języki publikacji: EN

Abstrakty

EN

The differential responses of the wheat cultivars Shi4185 and Yumai47 to salinity were studied. The higher sensitivity of Yumai47 to salinity was linked to a greater growth reduction under salt stress, compared to more salt-tolerant Shi4185. Salinity increased the Na⁺, proline and superoxide anion radical (O₂⁻) contents in both cultivars. Leaf Na⁺ content increased less in the more salttolerant cultivar Shi4185 than salt-sensitive Yumai47. The proline content increased more significantly in Shi4185 than Yumai47; on the contrary, superoxide anion radical content increased less in Shi4185 than Yumai47. This data indicated that wheat salinity tolerance can be increased by controlling Na⁺ transport from the root to shoot, associated with higher osmotic adjustment capability and antioxidant activity. Although salinity increased aldehyde oxidase (AO) activity and abscisic acid (ABA) content in the leaves and roots of both cultivars following the addition of NaCl to the growth medium, AO and ABA increased more in the salt-sensitive cultivar Yumai47 than the more salt-tolerant cultivar Shi4185. Xanthine dehydrogenase (XDH) activity in the leaves of both cultivars increased with increasing concentrations of NaCl; however, leaf XDH activity increased more significantly in Yumai47 than Shi4185. Root XDH activity in Shi4185 decreased with increasing NaCl concentrations, whereas salinity induced an increased root XDH activity in Yumai47. The involvement of AO and XDH enzymatic activities and altered ABA content in the response mechanisms of wheat to salinity are discussed herein.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2012
• Tom: 34
• Numer: 5
• Opis fizyczny: p.1767-1778,fig.,ref.

Twórcy

autor

Xu H.

• College of Agronony, Henan Agricultural University, 450002 Zhengzhou, China

autor

Zhai J.

• Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of BioScience and Technology, College of Agriculture, Hainan University, 570228 Haikou, China

autor

Liu Y.

• College of Agronony, Henan Agricultural University, 450002 Zhengzhou, China

autor

Cheng X.

• College of Agronony, Henan Agricultural University, 450002 Zhengzhou, China

autor

Xia Z.

• Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of BioScience and Technology, College of Agriculture, Hainan University, 570228 Haikou, China

autor

Chen F.

• College of Agronony, Henan Agricultural University, 450002 Zhengzhou, China

autor

Cui D.

• College of Agronony, Henan Agricultural University, 450002 Zhengzhou, China

autor

Jiang X.

• Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of BioScience and Technology, College of Agriculture, Hainan University, 570228 Haikou, China

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