scholarly journals Sterility caused by cooling treatment at the flowering stage in rice plants. II. The abnormal digestion of starch in pollen grain and metabolic changes in anthers following cooling treatment.

1987 ◽  
Vol 56 (4) ◽  
pp. 666-672 ◽  
Author(s):  
Setsuo KOIKE ◽  
Tetsuo SATAKE
Keyword(s):  
Pollen Grain ◽  
Metabolic Changes ◽  
Flowering Stage ◽  
Rice Plants

scholarly journals Relationship of susceptibility and growth stages of plant for development of epidemic of sheath blight in rice

2010 ◽  
Vol 2 (2) ◽  
pp. 230-233 ◽  
Author(s):  
Ramji Singh ◽  
Laxmi Shankar Singh ◽  
Durga Prasad ◽  
R.S. Kureel ◽  
Rakesh Sengar ◽  
...  
Keyword(s):  
Incubation Period ◽  
Disease Severity ◽  
Sheath Blight ◽  
Growth Stages ◽  
Flowering Stage ◽  
Rice Plants ◽  
Crop Growth Stages ◽  
Relationship Of ◽  
Dough Stage ◽  
Different Growth Stages

The present paper deals with most susceptible growth stage of rice with different farms and quantitiy of inoculum for development of sheath blight of rice by Rhizoctonia solani.Among seven different growth stages of rice crop i.e. seedling, initial tillering, maximum tillering, boot leaf, panicle emergence, flowering and dough stage, the flowering stage was found to be most susceptible and highly prone for sheath blight development, while seedling stage was found to be least susceptible and with low proneness for disease development. Disease severity, number and length of lesions get increased with the increasing crop growth stages up to flowering stage and thereafter disease severity decreases with the increases in further growth stages of rice plant. Among four different growth stages of the pathogen (inoculum capacity) i.e. five days old mycelium, seven days old mycelium, milky sclerotial stage and mature sclerotial stage which were inoculated at maximum tillering stage of rice plants, five days old mycelial inoculum was found to be most virulent. Disease severity decreased and incubation period increased with further ageing of inoculum. Among five different amount of inoculum (inoculum density) i.e. 0.20 mg, 5.50 mg, 6.00 mg, 7.00 mg and 8.00 mg of sclerotial inoculum, which were inoculated at maximum tillering stage of rice plants, highest disease severity and minimum incubation period was observed with 8.00 mg amount of sclerotial inoculum. Whereas, least disease severity and longest incubation period was observed when inoculation was done with 0.2 mg of sclerotial inoculum.

scholarly journals Metabolic Analysis Reveals Cry1C Gene Transformation Does Not Affect the Sensitivity of Rice to Rice Dwarf Virus

Metabolites ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 209
Author(s):  
Xuefei Chang ◽  
Duo Ning ◽  
Lijuan Mao ◽  
Beibei Wang ◽  
Qi Fang ◽  
...  
Keyword(s):  
Metabolic Changes ◽  
Gene Transformation ◽  
Dwarf Virus ◽  
Gas Chromatography Mass Spectrometry ◽  
Rice Dwarf Virus ◽  
Infection Rates ◽  
Rice Plants ◽  
Metabolic Analysis ◽  
Significant Difference ◽  
Potential Risks

Metabolomics is beginning to be used for assessing unintended changes in genetically modified (GM) crops. To investigate whether Cry1C gene transformation would induce metabolic changes in rice plants, and whether the metabolic changes would pose potential risks when Cry1C rice plants are exposed to rice dwarf virus (RDV), the metabolic profiles of Cry1C rice T1C-19 and its non-Bt parental rice MH63 under RDV-free and RDV-infected status were analyzed using gas chromatography–mass spectrometry (GC-MS). Compared to MH63 rice, slice difference was detected in T1C-19 under RDV-free conditions (less than 3%), while much more metabolites showed significant response to RDV infection in T1C-19 (15.6%) and in MH63 (5.0%). Pathway analysis showed biosynthesis of lysine, valine, leucine, and isoleucine may be affected by RDV infection in T1C-19. No significant difference in the contents of free amino acids (AAs) was found between T1C-19 and MH63 rice, and the free AA contents of the two rice plants showed similar responses to RDV infection. Furthermore, no significant differences of the RDV infection rates between T1C-19 and MH63 were detected. Our results showed the Cry1C gene transformation did not affect the sensitivity of rice to RDV, indicating Cry1C rice would not aggravate the epidemic and dispersal of RDV.

A Cytochemical Study of Glucose-6-Phosphatase (G-6-PASE) in Cells Participating in Atherogenesis of Rabbit Aorta

1975 ◽  
Vol 33 ◽  
pp. 460-461
Author(s):  
Sidney D. Kobernick ◽  
Edna A. Elfont ◽  
Neddra L. Brooks
Keyword(s):  
Lipid Metabolism ◽  
New Zealand ◽  
Aortic Wall ◽  
Rabbit Aorta ◽  
Plaque Formation ◽  
Metabolic Changes ◽  
Atherosclerotic Plaques ◽  
Cytochemical Study ◽  
Cellular Alteration ◽  
New Zealand White Rabbits

This cytochemical study was designed to investigate early metabolic changes in the aortic wall that might lead to or accompany development of atherosclerotic plaques in rabbits. The hypothesis that the primary cellular alteration leading to plaque formation might be due to changes in either carbohydrate or lipid metabolism led to histochemical studies that showed elevation of G-6-Pase in atherosclerotic plaques of rabbit aorta. This observation initiated the present investigation to determine how early in plaque formation and in which cells this change could be observed.Male New Zealand white rabbits of approximately 2000 kg consumed normal diets or diets containing 0.25 or 1.0 gm of cholesterol per day for 10, 50 and 90 days. Aortas were injected jin situ with glutaraldehyde fixative and dissected out. The plaques were identified, isolated, minced and fixed for not more than 10 minutes. Incubation and postfixation proceeded as described by Leskes and co-workers.

Regulation of plastid photosynthetic psbK-I-D-C gene expression by light in rice plants

1995 ◽  
Vol 93 (4) ◽  
pp. 617-623 ◽  
Author(s):  
Shu-Chen Grace Chen ◽  
Sang-Pin Wu ◽  
Pang-Kuo Lo ◽  
Dir-Pu Mon ◽  
Long-Fang Oliver Chen
Keyword(s):  
Gene Expression ◽  
Rice Plants
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