Foliage application of 5-aminolevulinic acid alleviates drought stress in sunflower (Helianthus annuus L.) through improving stay green and antioxidant enzymes activities

One of the major problems associated with rice cultivation and production is the deficiency of water resources. In here the effect of drought stress on growth, protein-, proline-, pigment contents and antioxidant enzymes activities in rice var. BRRI Dhan-24 was determined and analyzed under drought and wellwatered condition. Drought stress caused the decrease of growth and pigment contents - chlorophyll-a, b, a/b, total chlorophyll and carotenoids content of leaves of rice plants. On the other hand, the accumulation of protein, proline contents and antioxidant enzymes activities was increased under drought stress. It may be suggested that antioxidant enzymes activities and proline accumulation were associated with the growth of the plant and consequently with the mechanisms of drought tolerance in rice. Dhaka Univ. J. Biol. Sci. 29(1): 117-123, 2020 (January)

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Aminolevulinic acid-induced changes in some key physiological attributes and activities of antioxidant enzymes in sunflower (Helianthus annuus L.) plants under saline regimes

Scientia Horticulturae ◽

10.1016/j.scienta.2012.05.007 ◽

2012 ◽

Vol 142 ◽

pp. 143-148 ◽

Cited By ~ 51

Author(s):

Nudrat Aisha Akram ◽

Muhammad Ashraf ◽

F. Al-Qurainy

Keyword(s):

Antioxidant Enzymes ◽

Helianthus Annuus ◽

Aminolevulinic Acid ◽

Helianthus Annuus L ◽

Physiological Attributes ◽

Induced Changes

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Effects of drought stress on pigment and protein contents and antioxidant enzyme activities in five varieties of rice (Oryza sativa L.)

Bangladesh Journal of Botany ◽

10.3329/bjb.v49i4.52516 ◽

2020 ◽

Vol 49 (4) ◽

pp. 997-1002

Author(s):

Shukanta Saha ◽

Hasna Hena Begum ◽

Shamima Nasrin ◽

Rifat Samad

Keyword(s):

Antioxidant Enzymes ◽

Drought Stress ◽

Protein Content ◽

Chlorophyll A ◽

Pigment Content ◽

Antioxidant Enzyme Activities ◽

Rice Varieties ◽

Enzymes Activities ◽

Drought Tolerant ◽

Antioxidant Enzymes Activities

Drought stress caused the decrease of pigment contents - chlorophyll a, chlorophyll b, chlorophyll a/b ratio, total chlorophyll content and carotenoids content of leaves of five rice varieties (var. BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34, BRRI Dhan-38 and BRRI Dhan-56). Among five rice varieties, BRRI Dhan- 56 showed the least decrease of pigment content under stress. It caused the decrease of protein content of leaves of five rice varieties whereas BRRI Dhan-56 showed the least decrease (3.64%) of protein content under stress. On the other hand, drought stress increased CAT and SOD activities in the leaf of five varieties of rice and BRRI Dhan-56 showed the highest increase of CAT (37.67%) and SOD (94.17%) activity under stress. It may be assumed that higher antioxidant enzymes activities (CAT and SOD) and less reduction of protein content were related to the mechanisms of drought tolerance in rice. It is indicated that BRRI Dhan- 56 may be drought tolerant while BRRI Dhan-30, BRRI Dhan-32, BRRI Dhan-34 and BRRI Dhan-38 were drought sensitive rice varieties. Drought tolerant rice variety is selected based on pigment content, protein content and antioxidant enzymes activities (CAT and SOD).

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