scholarly journals Varietal Difference in the Effects of Applied Gibberellic Acid (GA3) on the Number of Spikelets per Panicle in Rice Plants.

1994 ◽  
Vol 63 (4) ◽  
pp. 594-600 ◽  
Author(s):  
Junko YAMAGISHI ◽  
Kunio ETOH ◽  
Tsuneo YAJIMA ◽  
Haruo SUZUKI ◽  
Shinobu INANAGA
Keyword(s):  
Gibberellic Acid ◽  
Varietal Difference ◽  
Rice Plants ◽  
Spikelets Per Panicle

scholarly journals Interaction of Succinic Acid-2,2-Dimethylhydrazide and Gibberellic Acid on Dwarf Bean and Dwarf Corn

1971 ◽  
Vol 24 (4) ◽  
pp. 1347
Author(s):  
N Veinbrants ◽  
KS Rowan
Keyword(s):  
Gibberellic Acid ◽  
Succinic Acid ◽  
Reducing Sugars ◽  
Leaf Sheath ◽  
Trimethylammonium Chloride ◽  
Barley Endosperm ◽  
Rice Plants ◽  
Inhibition Of Growth ◽  
Amo 1618 ◽  
Dwarf Bean

Although succinic acid-2,2-dimethylhydrazide (Alar) is usually classed as an antagonist of gibberellins, it does not inhibit synthesis of gibberellin in Fusarium (Ninneman et al. 1964; Dennis, Upper, and West 1965), nor inhibit release of reducing sugars from barley endosperm by gibberellic acid (GAa) (Paleg et al. 1965) or interact additively with ammonium(5-hydroxycarvacryl)trimethyl chloride piperidine carboxylate (Amo 1618) or (2-chloroethyl)trimethylammonium chloride (CCC) (Moore 1967). In addition, Alar reverses inhibition of growth of rice plants induced by CCC (Hishra and Paul 1967). In this paper we show that while Alar antagonizes the action of GAa in dwarf bean, it shows positive synergism with GAa in stimulating the growth of the first leaf sheath of dwarf corn (d1).

scholarly journals Varietal Difference in the Occurrence of Milky White Kernels in Response to Assimilate Supply in Rice Plants (Oryza sativa L.)

2011 ◽  
Vol 14 (2) ◽  
pp. 111-117 ◽  
Author(s):  
Tadashi Tsukaguchi ◽  
Kazuhiro Ohashi ◽  
Hidemitsu Sakai ◽  
Toshihiro Hasegawa
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Varietal Difference ◽  
Rice Plants

scholarly journals Osa-miR820 regulatory node primes rice plants to tolerate salt stress in an agronomically advantageous manner

2021 ◽  
Author(s):  
Neha Sharma ◽  
Sudhir Kumar ◽  
Neeti Sanan-Mishra
Keyword(s):  
Salt Stress ◽  
Stress Responses ◽  
De Novo ◽  
Expression Profiles ◽  
Rice Genome ◽  
Grain Filling ◽  
Rice Varieties ◽  
Methyl Transferase ◽  
Rice Plants ◽  
Spikelets Per Panicle

AbstractPlant microRNAs (miRs) play an important role in regulating gene expression under normal and stressful environments. Here we report the functional implications on the role of Osa-miR820, which can be grouped as a young, rice-specific miR. It is a member of the class II transposon-derived small RNA family and is processed as 21-nt and 24-nt length variants, respectively. Size of the miR820 family varies from 1 to 16 across the Oryza AA genomes. The 21–nt Osa-miR820 negatively regulates a de novo methylase, OsDRM2 (domains rearranged methyl transferase) that prevents methylation of the CACTA transposon loci in the rice genome. In an earlier report we have detailed the expression profiles of Osa-miR820 and its target in abiotic stress responses using rice varieties exhibiting varying response to salt stress. In this study, artificial miR based approach was employed to specifically overexpress 21-nt Osa-miR820 in rice plants (OX-820). These plants exhibited enhanced vigour, ~25-30% increase in the number of spikelets per panicle and increased grain filling, under normal and salt stress conditions. The OX-820 lines showed a better water use efficiency and higher proline accumulation under salt stress. These plants can serve as a useful source for dissecting the molecular machinery governed by Osa-miR820:DRM2 node to prime tolerance to salt stress in an agronomically advantageous manner.

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