scholarly journals OsDOF11 Affects Nitrogen Metabolism by Sucrose Transport Signaling in Rice (Oryza sativa L.)

2021 ◽  
Vol 12 ◽  
Author(s):  
Xinglei Huang ◽  
Yiyan Zhang ◽  
Leilei Wang ◽  
Xinyi Dong ◽  
Weixin Hu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Amino Acid ◽  
Nitrogen Metabolism ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Sucrose Transporter ◽  
Fresh Weight ◽  
Promoter Regions ◽  
Sucrose Transport ◽  
Amino Acid Contents

Carbon and nitrogen antagonistically regulate multiple developmental processes. However, the molecular mechanism affecting nitrogen metabolism by sucrose transport remains poorly defined. Previously, we noted that Oryza sativa DNA BINDING WITH ONE FINGER 11 (OsDOF11) mediated sucrose transport by binding to the promoter regions of Sucrose Transporter 1 (SUT1), Oryza sativa Sugars Will Eventually be Exported Transporters 11 (OsSWEET11), and OsSWEET14. Here, we note that OsDOF11 promotes nitrogen uptake and then maintains the ratio of fresh weight to dry weight in seedling plants and the effective leaf blade at flowering stages. Mutants of the sucrose transporter gene OsSWEET14 displayed a phenotype similar to that of OsDOF11. By microarray analysis and qRT-PCR in OsDOF11 mutant plants, OsDOF11 affected the transcription level of amino acid metabolism-related genes. We further found that mainly amino acid contents were reduced in flag leaves but increased in seeds. Both sugar and organic nitrogen changes caused the ratio of fresh weight to dry weight to decrease in OsDOF11 mutant seedling plants and mature leaves, which might result in vigorous reduced metabolic activity and become less susceptible to stress. These results demonstrated that OsDOF11 affected nitrogen metabolism by sugar distribution in rice, which provided new insight that OsDOF11 coordinated with C and N balance to maintain plant growth activity.

scholarly journals Genetic analysis of non-essential amino acid contents in rice (Oryza sativa L.) across environments

Hereditas ◽  
2004 ◽  
Vol 141 (2) ◽  
pp. 128-134 ◽  
Author(s):  
JIAN GUO WU ◽  
CHUN HAI SHI ◽  
XIAO MING ZHANG ◽  
TOMITA KATSURA
Keyword(s):  
Oryza Sativa ◽  
Amino Acid ◽  
Genetic Analysis ◽  
Essential Amino Acid ◽  
Oryza Sativa L ◽  
Amino Acid Contents

scholarly journals Changes of Amino Acid Contents in White Panicled Rice (Oryza sativa L.)

2012 ◽  
Vol 32 (2) ◽  
pp. 93-100 ◽  
Author(s):  
Ki-Choon Choi ◽  
Jai-Hyunk Ryu ◽  
Min-Woong Jung ◽  
Hyung-Su Park ◽  
Cheon-Man Kim ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Amino Acid ◽  
Oryza Sativa L ◽  
Amino Acid Contents

scholarly journals Transfer of Arsenic from Groundwater and Paddy Soil to Rice (Oryza sativa L.) Grain: A Micro Level Study in Chandina, Comilla

2015 ◽  
Vol 12 (2) ◽  
pp. 74-82 ◽  
Author(s):  
Md. Habibur Rahman ◽  
Md. Mohashin Farazi ◽  
Kohinoor Begum ◽  
Md. Serazul Islam
Keyword(s):  
Oryza Sativa ◽  
Irrigation Water ◽  
Agricultural Soil ◽  
Oryza Sativa L ◽  
Arsenic Concentration ◽  
Dry Weight ◽  
Permissible Limit ◽  
Arsenic Content ◽  
Soil Arsenic ◽  
Micro Level

Rice (Oryza sativa L.) is one of the major food crops in many countries. As the cultivation of rice requires huge volume of water, long term use of Arsenic contaminated groundwater for irrigation may result in the increase of arsenic concentration in the agricultural soil and eventually accumulation in rice grains. A micro level study was conducted to investigate the transfer of arsenic from irrigation water and soil to rice plants in the arsenic affected 8 unions of Chandina upazilla, Comilla district. The level of arsenic in irrigation water (0.12±0.08 and 0.67±0.07 mg l-1) was much above the WHO permissible limit of 0.01 mg l-1 for drinking water and FAO permissible limit of 0.10 mg l-1 for irrigation water. The total soil arsenic concentrations ranged from 3.21±0.80 to 8.74±2.83 mg kg-1 dry weight of soil, which was below the maximum acceptable limit for agricultural soil of 20.0 mg kg-1 as recommended by the European Community. The accumulation of arsenic in the grain ranged from 0.12±0.04 to 0.58±0.06 mg kg-1 in Boro and 0.16±0.04 to 1.06±0.20 mg kg-1 in T. Aman. Except grain sample (T. Aman) of one union, the grains in both Boro and T. Aman of all unions did not exceed 1.0 mg kg-1 dry weight of arsenic (the permissible limit of arsenic in rice according to WHO recommendation). Thus, till now rice has remained harmless for consumption in the study area. The results clearly showed that the arsenic content in the grains of Boro rice is correlated to the intensity of arsenic contamination of irrigation water and soil. The Agriculturists 2014; 12(2) 74-82

scholarly journals Antisense Expression of a Rice Sucrose Transporter OsSUT1 in Rice (Oryza sativa L.)

2001 ◽  
Vol 42 (10) ◽  
pp. 1181-1185 ◽  
Author(s):  
Ken Ishimaru ◽  
Tatsurou Hirose ◽  
Naohiro Aoki ◽  
Sakiko Takahashi ◽  
Kiyomi Ono ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Sucrose Transporter ◽  
Antisense Expression

scholarly journals Effects of salt stress on ion balance and nitrogen metabolism of old and young leaves in rice (Oryza sativa L.)

2012 ◽  
Vol 12 (1) ◽  
pp. 194 ◽  
Author(s):  
Huan Wang ◽  
Meishan Zhang ◽  
Rui Guo ◽  
Decheng Shi ◽  
Bao Liu ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Salt Stress ◽  
Nitrogen Metabolism ◽  
Oryza Sativa L ◽  
Ion Balance ◽  
Young Leaves

scholarly journals Effects of lead on growth, yield and mineral nutrition of rice (Oryza sativa L.)

2020 ◽  
Vol 5 (2) ◽  
pp. 83-92
Author(s):  
P Jasmin ◽  
WZ Prian ◽  
MN Mondol ◽  
SM Ullah ◽  
AS Chamon
Keyword(s):  
Oryza Sativa ◽  
Lead Concentration ◽  
Oryza Sativa L ◽  
Poultry Litter ◽  
Growth Yield ◽  
Lead Toxicity ◽  
Dry Weight ◽  
Cow Dung ◽  
Lead Uptake ◽  
Positive Effects

A pot experiment was conducted to evaluate the effect of lead (50, 100, 150 and 200 mg kg-1) on rice (Oryza sativa) and remediation of metal contamination by applying cow dung, poultry litter and lime to alleviate lead toxicity. The lengths, fresh and dry weights of shoot, root and macronutrients decreased with increasing level of lead compared to the control. The maximum reduction was observed in the pots treated with 200 mg kg-1 lead (19.50 and 20.03% for grain, 17.15 and 19.75% for shoot and 17.96 and 30.02% for root on the fresh and dry weight, respectively). The highest reduction in macronutrient content was observed in 200 mg kg-1 lead treated pot where N, P, K, Ca and Mg concentrations were reduced by 31.14, 47.44, 22.49, 21.84 and 31.58% for shoot and 28.95, 55.64, 37.5, 49.33 and 23% for root, respectively. On the other hand lead concentration in roots and shoots were increased with increasing lead treatment compared to the control. Treatments of the amendments (cow dung, poultry litter and lime) had positive effects though cow dung outshining the rest of them. This particular organic matter had considerable decreasing impacts in lead uptake by rice. Cow dung treated pots increased fresh and dry weight by 31.48 and 32.07% for grain, 14.08 and 35.30% for shoot and 57.09 and 34.48% for root compared to pot treated with 100 mg kg-1 lead. Cow dung remediated lead concentration by 48.85, 65.00 and 62.00% for grain, shoot and root, respectively. J. Biodivers. Conserv. Bioresour. Manag. 2019, 5(2): 83-92

Partial Proteolysis of Rice Phytochrome: Comparison with Oat Phytochrome

1989 ◽  
Vol 44 (9-10) ◽  
pp. 757-764 ◽  
Author(s):  
Rudolf Schendel ◽  
Zhe Tong ◽  
Wolfhart Rüdiger
Keyword(s):  
Signal Transduction ◽  
Oryza Sativa ◽  
Amino Acid ◽  
Spectral Data ◽  
Active Center ◽  
Oryza Sativa L ◽  
Slight Modification ◽  
Amino Acid Sequences ◽  
Rice Seedlings ◽  
Conserved Sequence

Phytochrome was isolated from etiolated rice seedlings (Oryza sativa L.) by slight modification of the procedure for oat phytochrome. Spectral data of rice phytochrome are comparable with those of oat and rye phytochrome. Controlled proteolysis with endoproteinases Lys-C and Glu-C yielded defined fragments some of which were different for Pr and Pfr. The fragments were identified by comparison with the corresponding fragments of oat phytochrome and by comparison of the amino acid sequences of rice and oat phytochrome. Regions of the peptide chain which are differently exposed in Pr and Pfr were identified. A highly conserved sequence around residues 740-750 is discussed as candidate for an ‘‘active center’’ of signal transduction.

scholarly journals Evaluation of Rice (Oryza sativa L.) Genotypes for Drought Tolerance at Germination and Early Seedling Stage

2018 ◽  
Vol 16 (1) ◽  
pp. 44-54 ◽  
Author(s):  
M M Islam ◽  
E Kayesh ◽  
E Zaman ◽  
T A Urmi ◽  
M M Haque
Keyword(s):  
Oryza Sativa ◽  
Water Stress ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Evaluation System ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Seedling Height ◽  
Early Seedling ◽  
Rice Genotypes

Drought stress is a major constraint to the production and yield stability of crops. Rice (Oryza sativa L.) is considered as a drought-sensitive crop species. Within this species, there are considerable varietal differences in sensitivity to this environmental stress. An experiment was conducted at the laboratory of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Bangladesh during April to September 2016 to evaluate 100 rice genotypes for drought tolerance during germination and early seedling growth stage. The genotypes were tested against five levels of drought stress imposed by Polyethylene glycol 6000 (PEG-6000) @ 0, 5, 10, 15 and 20%. The experiment was laid out in a complete randomized design with four replications. The results showed that with increasing water stress, germination in all the genotypes decreased from 95.8% in control to 6.6 % in highest stress (20% PEG) level. Seedling height and dry weight also decreased in all rice genotypes with the increase in water stress level. Based on Standard Evaluation System (SES),18 genotypes were selected primarily. Among the 18 genotypes, Ratoil and Chinisakkar showed higher germination index, relative seedling height and relative seedling dry weight than the check drought tolerant BRRI dhan43 at 20% PEG. Beside these, performance of Kumridhan, Pusur and Somondori was also well at this level compared to BRRI dhan43. The genotypes Ratoil, Chinisakkar, Kumridhan, Pusur and Somondori showed the best performance under drought condition. The Agriculturists 2018; 16(1) 44-54

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