Thiamin-induced variations in oxidative defense processes in white clover (Trifolium repens L.) under water deficit stress

Muhammad Adeel GHAFAR; Nudrat Aisha AKRAM; Muhammad ASHRAF; Muhammad Yasin ASHRAF; Muhammad SADIQ

Makale detayları

Thiamin-induced variations in oxidative defense processes in white clover (Trifolium repens L.) under water deficit stress

Yazarlar:

Muhammad Adeel GHAFAR | Nudrat Aisha AKRAM | Muhammad ASHRAF | Muhammad Yasin ASHRAF | Muhammad SADIQ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Botany 2019 Vol.43 Issue 1, pp.58-66

Belge Tipi:

Makale

Yayın Tarihi:

1/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000814944

Sıklık:

İki Aylık

eISSN:

1303-6106

pISSN:

1300-008X

Özet:

 


 
                         Vitamins are regarded as vital growth substances. They act as cofactors of various key enzymes involved in metabolism and 
also have vital influence on metabolic activities of plants. They are believed to play a significant role in plants against abiotic stresses, 
particularly  during  water  stress.  The  current  experiment  was  conducted  to  evaluate  the  role  of  exogenously  applied  thiamin  on  two  white clover cultivars, Super Late Fsd and Layalpur Late, at varying [100% (control), 80%, and 60% field capacities] water regimes. A 
significant suppression was noted in plant biomass, plant height, chlorophyll a and b contents, total soluble proteins, and shoot and root P, Ca2+, and K+ contents particularly at 60% field capacity in both cultivars. Drought stress had no significant effect on phenolic contents, 
but MDA concentration was increased in white clover cultivar Layalpur Late at both 80% and 60% drought levels. However, in Super 
Late Fsd, it was increased at 80% and decreased at 60% field capacity. Drought stress significantly enhanced levels/activities of ascorbic 
acid  and  antioxidant  enzymes  (CAT,  SOD,  and  POD).  Foliar  spray  of  50  mM  thiamin  improved  the  shoot  and  root  fresh  weights  
and  shoot  dry  weight.  Varying  levels  of  thiamin  were  found  significantly  effective  for  shoot  length,  root  length,  and  photosynthetic  pigments (chlorophyll a and b
). However, no considerable change was observed in ascorbic acid, total soluble proteins, and activities of 
antioxidants (SOD, CAT, and POD) due to exogenous spray of thiamin on two white clover cultivars. Of the two white clover cultivars, 
Super  Late  Fsd  was  better  in  shoot  and  root  P  and  Layalpur  Late  in  root  dry  weight  and  root  length.  Overall,  100  mM  of  thiamin  
was found effective in improving growth of both white clover cultivars, which can be attributed to thiamin-induced improvement in 
photosynthetic pigments and phenolic contents.
                    

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Makale detayları

Thiamin-induced variations in oxidative defense processes in white clover (Trifolium repens L.) under water deficit stress

Yazarlar: Muhammad Adeel GHAFAR | Nudrat Aisha AKRAM | Muhammad ASHRAF | Muhammad Yasin ASHRAF | Muhammad SADIQ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Botany 2019 Vol.43 Issue 1, pp.58-66

Belge Tipi: Makale

Yayın Tarihi: 1/2019

Belge Dili: İngilizce

Document ID (Org No.): 2000814944

Sıklık: İki Aylık

eISSN: 1303-6106

pISSN: 1300-008X

Sayı

Yazarlar:

Muhammad Adeel GHAFAR | Nudrat Aisha AKRAM | Muhammad ASHRAF | Muhammad Yasin ASHRAF | Muhammad SADIQ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Botany 2019 Vol.43 Issue 1, pp.58-66

Belge Tipi:

Makale

Yayın Tarihi:

1/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000814944

Sıklık:

İki Aylık

eISSN:

1303-6106

pISSN:

1300-008X