Effect of Activator Protein from Alternaria tenuissima on Morphological Characteristics,Leaf Water Content,Membrane Permeability and Antioxidant Enzymes of Soybean Seedlings under Drought Stress

doi:10.7668/hbnxb.2016.S1.037

Abstract

Abstract: To study the drought-resistant effect of activating protein on soybean for increasing yield and improving resistance drought,the effects at different concentrations(1,3,5 μg/mL) of activator protein from Alternaria tenuissima on morphological characteristics,leaf water content,membrane permeability and antioxidant enzymes of soybean seedlings under drought stress were in vestigated using soybean variety Jidou 17.The results showed that using this activator protein promoted biomass accumulation and root growth,improved leaf water content and activities of antioxidant enzymes,including SOD,CAT and POD in soybean seedlings under the drought tress.Meanwhile,cell membrane permeability and MDA content in the soybean seedlings in drought conditions were reduced after using this activator protein.The results demonst rated that spraying activator protein from Alternaria tenuissima was beneficial for enhancing drought resistance in soybean seedlings.The effect of 3 μg/mL concentration of this activator protein was of best to the plant.

Key words: Activator protein, Soybean seedlings, Drought stress, Antioxidant enzymes, Cell membrane permeability

CLC Number:

DI Rui, YANG Chunyan. Effect of Activator Protein from Alternaria tenuissima on Morphological Characteristics,Leaf Water Content,Membrane Permeability and Antioxidant Enzymes of Soybean Seedlings under Drought Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(S1): 213-218. doi: 10.7668/hbnxb.2016.S1.037.

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