Gibberellin-like activity of helminthosporol, helminthosporic acid and dihydrohelminthosporic acid in leaf sheath elongation ofDwarf 5 mutants ofZea mays

1967 ◽  
Vol 54 (4) ◽  
pp. 96-97 ◽  
Author(s):  
Masayuki Katsumi ◽  
Saburo Tamura ◽  
Akira Sakurai
Keyword(s):  
Leaf Sheath ◽  
Leaf Sheath Elongation

scholarly journals OsBIC1 Directly Interacts with OsCRYs to Regulate Leaf Sheath Length through Mediating GA-Responsive Pathway

2021 ◽  
Vol 23 (1) ◽  
pp. 287
Author(s):  
Cong Li ◽  
Xin Wang ◽  
Liya Zhang ◽  
Chunyu Zhang ◽  
Chunsheng Yu ◽  
...  
Keyword(s):  
Blue Light ◽  
Functional Characterization ◽  
Direct Interaction ◽  
Degradation Process ◽  
Leaf Sheath ◽  
Pcr Analysis ◽  
Dependent Manner ◽  
And Control ◽  
Cryptochrome 1 ◽  
Leaf Sheath Elongation

Cryptochrome 1 and 2 (CRY1 and CRY2) are blue light receptors involved in the regulation of hypocotyl elongation, cotyledon expansion, and flowering time in Arabidopsisthaliana. Two cryptochrome-interacting proteins, Blue-light Inhibitor of Cryptochrome 1 and 2 (BIC1 and BIC2), have been found in Arabidopsis. BIC1 plays critical roles in suppressing the physiological activities of CRY2, which include the blue light-dependent dimerization, phosphorylation, photobody formation, and degradation process, but the functional characterization of BIC protein in other crops has not yet been performed. To investigate the function of BIC protein in rice (Oryza sativa), two homologous genes of Arabidopsis BIC1 and BIC2, namely OsBIC1 and OsBIC2 (OsBICs), were identified. The overexpression of OsBIC1 and OsBIC2 led to increased leaf sheath length, whereas mutations in OsBIC1 displayed shorter leaf sheath in a blue light intensity-dependent manner. OsBIC1 regulated blue light-induced leaf sheath elongation through direct interaction with OsCRY1a, OsCRY1b, and OsCRY2 (OsCRYs). Longitudinal sections of the second leaf sheath demonstrated that OsBIC1 and OsCRYs controlled leaf sheath length by influencing the ratio of epidermal cells with different lengths. RNA-sequencing (RNA-seq) and quantitative Real-Time Polymerase Chain Reaction (qRT-PCR) analysis further proved that OsBIC1 and OsCRYs regulated similar transcriptome changes in regulating Gibberellic Acids (GA)-responsive pathway. Taken together, these results suggested that OsBIC1 and OsCRYs worked together to regulate epidermal cell elongation and control blue light-induced leaf sheath elongation through the GA-responsive pathway.

scholarly journals Gibberellin-like Activity of Steviol in Leaf Sheath Elongation of the 'Tan-ginbozu' Dwarf of Oryza sativa

1968 ◽  
Vol 81 (963) ◽  
pp. 464-466 ◽  
Author(s):  
Yutaka MURAKAMI
Keyword(s):  
Oryza Sativa ◽  
Leaf Sheath ◽  
Leaf Sheath Elongation

Analysis of Differential Expression of Proteins in Rice Leaf Sheath during Grain Filling

2008 ◽  
Vol 34 (4) ◽  
pp. 619-626 ◽  
Author(s):  
Zhao-Wei LI
Keyword(s):  
Differential Expression ◽  
Grain Filling ◽  
Leaf Sheath ◽  
Rice Leaf

Characterization of β-tubulin 4 regulated by gibberellins in rice leaf sheath

2009 ◽  
Vol 53 (3) ◽  
pp. 422-428 ◽  
Author(s):  
G. Yang ◽  
A. Jan ◽  
S. Komatsu
Keyword(s):  
Leaf Sheath ◽  
Rice Leaf ◽  
Β Tubulin

The potential digestibility of cellulose in grasses and its relationship with chemical and anatomical parameters

1972 ◽  
Vol 78 (3) ◽  
pp. 457-464 ◽  
Author(s):  
R. J. Wilkins
Keyword(s):  
Floral Development ◽  
Lignin Content ◽  
Leaf Sheath ◽  
Vascular Bundles ◽  
Cellulose Digestibility ◽  
Wimmera Ryegrass ◽  
Rate Of Decline ◽  
The Relationship ◽  
Anatomical Parameters

SUMMARYPotential cellulose digestibility, measured by incubation in vitrofor 6 days, decreased during floral development in perennial ryegrass, Wimmera ryegrass, cocksfoot, oat and tall fescue. The rate of decline was slower than for cellulose digestibility measured after incubation in vitro for 2 days only. Morphological fractions ranked in order of descending potential cellulose digestibility – leaf blade, inflorescence, leaf sheath and stem.Lignin content was determined chemically by the method of Van Soest (1963) and lignified tissue was assessed by staining transverse sections of leaf blades and leaf sheaths with safranin and fast green. Both lignin and lignified tissue increased with maturity. Lignified tissue increased mainly through increase in the number of scleren-chyma cells, but was also affected by the formation of lacunae or cavities between the vascular bundles in leaf blades of cocksfoot and in leaf sheaths of all species studied. For 19 samples of leaf blades and leaf sheaths, potential cellulose digestibility had significant negative correlations with both lignin content (r = -0·862) and lignified tissue (r = -0·905). Limitations to the techniques used to assess lignification and further factors which may affect the relationship between lignification and potential cellulose digestibility are discussed.

scholarly journals Small virus-like particles isolated from the leaf sheath tissues of rice plants and from the rice tarsonemid mites, Steneotarsonemus spinki smiley (Acarina, Tarsonemidae).

1984 ◽  
Vol 50 (3) ◽  
pp. 368-374 ◽  
Author(s):  
Eishiro SHIKATA ◽  
Shinji KAWANO ◽  
Toshihiro SENBOKU ◽  
Emmanuel R. TIONGCO ◽  
Kuniyuki MIYAJIMA
Keyword(s):  
Leaf Sheath ◽  
Virus Like Particles ◽  
Rice Plants ◽  
Small Virus
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