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Enhanced photorespiration and rubber yield in Cycocel-treated Guayule plants (Parthenium argentatum Gray)

100%

Reddy A. R., Suhasini M., Rama Das V. S.

Acta Physiologiae Plantarum

1990

tom 12

nr 3

Biochemical responses to drought stress in mulberry (Morus alba L.): evaluation of proline, glycine betaine and abscisic acid accumulation in five cultivars

100%

Chaitanya K. V., Rasineni G. K., Reddy A. R.

Acta Physiologiae Plantarum

2009

tom 31

nr 3

Five popularly grown mulberry cultivars (K-2, MR-2, TR-10, BC2-59 and S-13) were subjected to drought stress by withholding irrigation, to obtain leaf water potentials (Ψw) ranging from-0.75,-1.50 and-2.25 MPa. Accumulation of proline, glycine betaine and abscisic acid (ABA) were quantified in control and water stressed mulberry leaves. The activities of enzymes involved in proline accumulation including glutamate dehydrogenase (EC1.4.1.2-4), pyrroline-5-carboxylate synthetase (EC 1.2.1.41), pyrroline-5-carboxylate reductase (EC1.5.1.2), ornithine transaminase (EC 2.6.1.13) were significantly enhanced in the leaves of all the cultivars with decreasing leaf water potentials, while the activities of proline dehydrogenase (EC 1.5.1.2) were reduced with progressive increase in water stress. Accumulation of proline, glycine betaine and abscisic acid was relatively higher in S-13 and BC2-59 compared to K-2, MR-2 and TR-10 under water deficit conditions. Our results demonstrate that S-13 and BC2-59 have superior osmoprotectant mechanisms under water-limited growth regimes.

Ograniczanie wyników

2 Acta Physiologiae Plantarum

2 Reddy A. R.

1 Chaitanya K. V.

1 Rama Das V. S.

1 Rasineni G. K.

1 Suhasini M.

1 2009

1 1990

Wyniki wyszukiwania

Enhanced photorespiration and rubber yield in Cycocel-treated Guayule plants (Parthenium argentatum Gray)

Biochemical responses to drought stress in mulberry (Morus alba L.): evaluation of proline, glycine betaine and abscisic acid accumulation in five cultivars