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RISS 인기검색어
- 검색키워드
- 저자 : Kabir Ahmad Humayan (검색결과 2 건)
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Rahman, Md. Atikur,Lee, Sang-Hoon,Ji, Hee Chung,Kabir, Ahmad Humayan,Jones, Chris Stephen,Lee, Ki-Won MDPI 2018 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.19 No.10
<P>Aluminum (Al) toxicity is one of the major limitations that inhibit plant growth and development in acidic soils. In acidic soils (pH < 5.0), phototoxic-aluminum (Al<SUP>3+</SUP>) rapidly inhibits root growth, and subsequently affects water and nutrient uptake in plants. This review updates the existing knowledge concerning the role of mineral nutrition for alleviating Al toxicity in plants to acid soils. Here, we explored phosphorus (P) is more beneficial in plants under P-deficient, and Al toxic conditions. Exogenous P addition increased root respiration, plant growth, chlorophyll content, and dry matter yield. Calcium (Ca) amendment (liming) is effective for correcting soil acidity, and for alleviating Al toxicity. Magnesium (Mg) is able to prevent Al migration through the cytosolic plasma membrane in root tips. Sulfur (S) is recognized as a versatile element that alleviates several metals toxicity including Al. Moreover, silicon (Si), and other components such as industrial byproducts, hormones, organic acids, polyamines, biofertilizers, and biochars played promising roles for mitigating Al toxicity in plants. Furthermore, this review provides a comprehensive understanding of several new methods and low-cost effective strategies relevant to the exogenous application of mineral nutrition on Al toxicity mitigation. This information would be effective for further improvement of crop plants in acid soils.</P>
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Rahman Md Atikur,Alam Iftekhar,Sharmin Shamima Akhtar,Kabir Ahmad Humayan,Kim Yong-Goo,Liu Gongshe,Lee Byung-Hyun 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.6
Drought stress is one of the major constraints for soybean growth and productivity worldwide. The study was aimed to investigate drought-induced physiological and proteomic changes in soybeans, as well as drought relief using exogenous hydrogen peroxide (H2O2). In drought-stressed plants, H2O2 spray on the leaf surface improved relative water content (RWC), net photosynthetic rate (Pn), and stomatal conductance (Gs). Furthermore, exogenous H2O2 reduced drought stress-induced endogenous MDA and H2O2 levels, as well as increased the key antioxidant enzymes (SOD,CAT, APX and POD) activ- ity and proline content in H2O2-treated soybean plants. These findings showed that H2O2 treatment significantly reduced drought stress by increasing the antioxidative defense system and osmotic adjustment. Furthermore, using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry, a total of 27 differently expressed proteins was identified, wherein 23 were up-regulated and 4 were down-regulated under drought condition. These proteins were found to be involved in photosynthesis, energy and metabolism, plant defense and antioxidant, signaling and transport, and transcription regulation in response to H2O2 treatment in soybean under drought stress, according to in silico interactome analysis. These findings add to our understanding of H2O2-mediated drought stress alleviation, as well as the physiological and molecular responses of soybean to drought stress.
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