Application of sucrose modulates the expressions of genes involved in proline and polyamine metabolism in maize seedlings exposed to drought
Yükleniyor...
Dosyalar
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ACAD Sciences Czech Republic
Erişim Hakkı
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivs 3.0 United States
Attribution-NonCommercial-NoDerivs 3.0 United States
Özet
Sucrose, proline, and polyamines are compatible solutes accumulating in plant tissues and increasing cellular osmolarity under environmental stresses. These compatible solutes and hydrogen peroxide can function as signaling molecules in plants. There has been very little evidence how the supply of sucrose changes the biosynthesis of compatible solutes. This study aimed to assess the cross-talk among sucrose, H2O2, and compatible solutes on the expression of genes encoding key enzymes in the pathways of proline and polyamine metabolism in drought stressed maize seedlings. Drought stress (induced by polyethylene glycol solution) increased the expressions of genes encoding pyrroline-5-carboxylate synthetase (P5CS), arginine decarboxylase (ADC), and S-adenosylmethionine decarboxylase (SAMDC), while decreased proline dehydrogenase (ProDH), diamine oxidase (DAO), and polyamine oxidase (PAO) expressions. Addition of sucrose to the stressed seedlings increased the P5CS, ADC and SAMDC expressions more than drought stress alone and reduced more the ProDH, DAO, and PAO expressions. Moreover, exogenous sucrose increased leaf water potential and the content of proline, polyamines, and total soluble sugars, whereas decreased H2O2 content and membrane damages under the drought stress conditions. Consequently, exogenous sucrose contributed to the preservation of water status and the amelioration of damage in maize seedlings under the drought stress.
Açıklama
Anahtar Kelimeler
Arginine decarboxylase, Diamine oxidase, Hydrogen peroxide, Polyamine oxidase, Proline dehydrogenase, Pyrroline-5-carboxylate synthetase, S-adenosylmethionine decarboxylase
Kaynak
Biologia Plantarum
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
63
Sayı
Künye
Altuntaş, C., Sezgin, A., Demiralay, M., Terzi, R., Sağlam, A., & Kadioğlu, A. (2019). Application of sucrose modulates the expressions of genes involved in proline and polyamine metabolism in maize seedlings exposed to drought. Biol Plantarum, 63, 247-252.
