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| 1 | Antioxidant Protection Mechanisms Reveal Significant Response in Drought-Induced Oxidative Stress in Some Traditional Rice of Assam, India显示文摘Drought tolerance levels and antioxidant protection mechanisms were evaluated for 21 traditional rice varieties of Assam, India, along with Sahbhagi Dhan(drought tolerant) and IR64(drought sensitive) as controls. Drought was imposed in hydroponic culture with polyethylene glycol 6000(PEG6000) that was initially standardized with different concentrations. All the rice varieties showed apparent decreases in growth characteristics under drought stress(initially at 15% for 7 d followed by 20% PEG6000 for 7 d in Yoshida medium). On the basis of standard evaluation score(SES), eight rice varieties showed high drought tolerance which were carried forward for further biochemical analyses. Based on different morphophysiological parameters, SN03(Bora), SN04(Prosad Bhog), SN05(Kola Joha), SN06(Helash Bora), SN08(Salihoi Bao), SN12(Kola Amona), SN20(Ronga Bora) and SN21(Sok-Bonglong) were identified as promising drought tolerant varieties. The non-enzymatic antioxidants activities viz., glutathione, ascorbate and enzymatic antioxidant activities such as superoxide dismutase(SOD), catalase(CAT), guaiacol peroxidase(GPX), ascorbate peroxidase(APX), glutathione reductase(GR) in shoots and roots of all the selected varieties revealed significant level of protection mechanisms as compared with controls. Enhancement in activities of the overall antioxidant enzymes including SOD, GPX, CAT, GR and APX under drought stress reflects their role in the adaptation process under water stress. | Shamsun NAHAR Lakshminarayana R.VEMIREDDY Lingaraj SAHOO Bhaben TANTI | 2018 | Rice science2018，25，4： | 3 |
| 2 | Cowpea NAC1/NAC2 transcription factors improve growth and tolerance to drought and heat in transgenic cowpea through combined activation of photosynthetic and antioxidant mechanisms显示文摘NAC(NAM/ATAF1/2/CUC2)transcription factors are central switches of growth and stress responses in plants.However,unpredictable interspecies conservation of function and regulatory targets makes the well-studied NAC orthologs inapt for pulse engineering.The knowledge of suitable NAC candidates in hardy pulses like cowpea(Vigna unguiculata(L.)Walp.)is still in infancy,hence warrants immediate biotechnological intervention.Here,we showed that overexpression of two native NAC genes(VuNAC1and VuNAC2)promoted germinative,vegetative,and reproductive growth and conferred multiple abiotic stress tolerance in a commercial cowpea variety.The transgenic lines displayed increased leaf area,thicker stem,nodule-rich denser root system,early flowering,higher pod production(~3.2-fold and~2.1-fold),and greater seed weight(10.3%and 6.0%).In contrast,transient suppression of VuNAC1/2 caused severe growth retardation and flower inhibition.The overexpressor lines showed remarkable tolerance to major yielddeclining terminal stresses,such as drought,salinity,heat,and cold,and recovered growth and seed production by boosting photosynthetic activity,water use efficiency,membrane integrity,Na^(+)/K^(+)homeostasis,and antioxidant activity.The comparative transcriptome study indicated consolidated activation of genes involved in chloroplast development,photosynthetic complexes,cell division and expansion,cell wall biogenesis,nutrient uptake and metabolism,stress response,abscisic acid,and auxin signaling.Unlike their orthologs,VuNAC1/2 direct synergistic transcriptional tuning of stress and developmental signaling to avoid unwanted trade-offs.Their overexpression governs the favorable interplay of photosynthesis and reactive oxygen species regulation to improve stress recovery,nutritional sufficiency,biomass,and production.This unconventional balance of strong stress tolerance and agronomic quality is useful for translational crop research and molecular breeding of pulses. | Richa Srivastava Yuriko Kobayashi Hiroyuki Koyama Lingaraj Sahoo | 2023 | Journal of Integrative Plant Biology2023，65，1： | 2 |
| 3 | Development of a genotype independent and transformation amenable regeneration system from shoot apex in rice (Oryza sativa spp. indica) using TDZ显示文摘 | Mohitosh Dey Souvika Bakshi Gabor Galiba Lingaraj Sahoo Sanjib Panda | 2012 | Biotech2012，，3： | 1 |
| 4 | Genome-wide Association Study Reveals that the Aquaporin NIP1;1 Contributes to Variation in Hydrogen Peroxide Sensitivity in Arabidopsis thaiiana显示文摘氢过氧化物(H 2 O 2) 是影响房间在各种各样的植物防卫回答发信号的反应的氧种 ? 并且导致规划房间死亡。为了识别新部件,与 H 2 O 2 发信号和忍耐,我们在面对有毒的 H 2 O 2 层次。最重要的 SNP 与编码 aquaporin NODULIN 26-LIKE 的染色体 4 基因的簇被联系 ? 内在的蛋白质 1;1 (NIP1; 1 ) , NB 弧包含域的疾病抵抗蛋白质(AT4G19050 ) ,和通常认为的膜脂蛋白(AT4G19070 ) 。NIP1 的表示水平; 1 在 A. 相对高 ? 对 H 2 O 2 。另外, NIP1 的 overexpression; 1 在容忍的就职(例如, Col-0 ) 增加了转基因的植物的敏感到 H 2 O 2 。一在里面 planta -glucuronidase 记者试金表明在 NIP1 的变化; 1 个倡导者为它在 H 2 O 2-tolerant 和敏感就职。房间死亡是广泛的并且 H 2 O 2 层次在 H 2 O 2-sensitive 和 NIP1; 1-overexpressing 就职。一起,我们的结果显示 aquaporin NIP1; 1 是 A. 的敏感的一个关键决定因素 ? thaliana 到 H 2 O 2, 并且贡献我们的 GWAS 检测的 phenotypic 变化。 | Ayan Sadhukhan Yuriko Kobayashi Yuki Nakano Satoshi luchi Masatomo Kobayashi Lingaraj Sahoo Hiroyuki Koyama | 2017 | Molecular Plant2017，10，8： | 1 |
| 5 | Effect of biochar type on infiltration,water retention and desiccation crack potential of a silty sand显示文摘Biochar is a carbon-rich material obtained after thermochemical conversion of biomass under no oxygen environment.The effect of biochar amendment on soil properties,such as water retention,infiltration and desiccation crack potential was studied in the recent years.However,the effect of biochar or feedstock type on these properties is not explicit.This study investigates the effect of two different(in terms of feedstock)types of biochar on the water retention,infiltration and desiccation crack-ing behavior of compacted silty sand.Water retention characteristics,infiltration rate and the progression of desiccation cracks were measured after compacting soil amended with 5-10%(w/w)biochar produced from water hyacinth(WHB)and mesquite.Measurements were also taken for an unpyrolyzed material coir pith(CP,sourced from coconut husk)-amended soil for comparing the results of biochar-amended soil.The results show that the amendment of 5%to 10%biochar increased the maximum water holding capacity(θs),air entry value(AEV)and water content at 1500 kPa(θ1500)of the soil,whereas decreased the infiltration rate and peak crack intensity factor(CIF)of the soil.Moreover,the application of CP increased the infiltration rate.The amendment of WHB showed the highest increment in AEV andθ1500 and the highest decrement in infiltration rate and CIF compared to the other amendments.Based on the results,it is advisable to use the WHB-amended soil in bioengineered structures that could promote the growth of vegetation by higher water retention and could reduce the potential of leachate formation by decreasing water infiltration and desiccation crack potential. | Rojimul Hussain Sanandam Bordoloi Piyush gupta Ankit Garg K.Ravi S.Sreedeep Lingaraj Sahoo | 2020 | Biochar2020，2，4： | 1 |
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