scholarly journals Phytochrome A Mediates the Promotion of Seed Germination by Very Low Fluences of Light and Canopy Shade Light in Arabidopsis

1996 ◽  
Vol 110 (2) ◽  
pp. 439-444 ◽  
Author(s):  
J. F. Botto ◽  
R. A. Sanchez ◽  
G. C. Whitelam ◽  
J. J. Casal
Keyword(s):  
Seed Germination ◽  
Phytochrome A

scholarly journals Transcriptional Programs Related to Phytochrome A Function in Arabidopsis Seed Germination

2013 ◽  
Vol 6 (4) ◽  
pp. 1261-1273 ◽  
Author(s):  
Silvia E. Ibarra ◽  
Gabriela Auge ◽  
Rodolfo A. Sánchez ◽  
Javier F. Botto
Keyword(s):  
Seed Germination ◽  
Phytochrome A ◽  
Arabidopsis Seed

Tomato seed germination: regulation of different response modes by phytochrome B2 and phytochrome A

2006 ◽  
Vol 29 (4) ◽  
pp. 701-709 ◽  
Author(s):  
KLAUS-J. APPENROTH ◽  
GABRIELE LENK ◽  
LYDIA GOLDAU ◽  
RAMESHWAR SHARMA
Keyword(s):  
Seed Germination ◽  
Phytochrome A ◽  
Tomato Seed ◽  
Response Modes ◽  
Different Response

Phytochrome A-mediated inhibition of seed germination in tomato

Planta ◽  
2001 ◽  
Vol 213 (5) ◽  
pp. 764-769 ◽  
Author(s):  
Chizuko Shichijo ◽  
Kazuya Katada ◽  
Osamu Tanaka ◽  
Tohru Hashimoto
Keyword(s):  
Seed Germination ◽  
Phytochrome A

Phytochromes and seed germination

1998 ◽  
Vol 8 (3) ◽  
pp. 317-329 ◽  
Author(s):  
Jorge J. Casal ◽  
Rodolfo A. Sánchez
Keyword(s):  
Seed Germination ◽  
Red Light ◽  
High Irradiance ◽  
Phytochrome B ◽  
Phytochrome A ◽  
Germination Inhibition ◽  
Growth Capacity ◽  
Small Family ◽  
Recent Advances ◽  
Signalling Process

AbstractThe control of seed germination by red and far-red light is one of the earliest documented phytochrome-mediated processes Phytochrome is now known to be a small family of photoreceptors whose apoproteins are encoded by different genes Phytochrome B (phyB) is present in dry seeds and affects germination of dark imbibed seeds but other phytochromes could also be involved Phytochrome A (phyA) appears after several hours of imbibition and mediates very-low-fluence responses PhyB and other phytochromes different from phyA mediate the classical low-fluence responses The phytochrome involved in high-irradiance responses of seed germination (inhibition of germination under continuous far-red) has not been unequivocally established, although phyA is the most likely candidate Phytochrome can affect embryo growth capacity and/or the constraint imposed by the tissues surrounding the embryo At least in some species, gibberellins participate in the signalling process In the field, phyA has been implicated in the perception of light during soil cultivations, and phyB would be involved in the perception of red/far-red ratios associated with the presence of gaps in the canopy This review describes recent advances in phytochrome research, particularly those derived from the analysis of germination in specific mutants, and their connection with traditional observations on phytochrome control of seed germination

scholarly journals The germination of seeds of Epiphyllum phyllanthus (L.) Haw. (Cactaceae) is controlled by phytochrome and by nonphytochrome related process

2010 ◽  
Vol 10 (1) ◽  
pp. 115-119 ◽  
Author(s):  
Edson Simão ◽  
Adriana Tiemi Nakamura ◽  
Massanori Takaki
Keyword(s):  
Seed Germination ◽  
Wide Temperature Range ◽  
Germination Rate ◽  
Active Form ◽  
High Sensitivity ◽  
Phytochrome B ◽  
Phytochrome A ◽  
Seed Population ◽  
Kinetics Of ◽  
Related Process

The Epiphyllum phyllanthus seeds present high sensitivity to light and their germination can be promoted by dim green safe light through the very low fluence response mediated by phytochrome A. Part of seed population have phytochrome B in active form (Pfr) enough to promote germination in darkness. Seeds of Epiphyllum phyllanthus germinate in a wide temperature range from 10 to 40°C, reaching complete germination in the range of 15 to 30°C. Above 35°C the germination rate increases indicating control by a non phytochrome related process. The analysis of kinetics of seed germination indicated that the phytochrome A control is less dependent on temperature than phytochrome B controlled process.

scholarly journals Action spectra for phytochrome A- and B-specific photoinduction of seed germination in Arabidopsis thaliana.

1996 ◽  
Vol 93 (15) ◽  
pp. 8129-8133 ◽  
Author(s):  
T. Shinomura ◽  
A. Nagatani ◽  
H. Hanzawa ◽  
M. Kubota ◽  
M. Watanabe ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Seed Germination ◽  
Phytochrome A ◽  
Action Spectra

beta-Glucosidase activities and HCN liberation in unimbibed and imbibed seeds, and the induction of cocklebur seed germination by cyanogenic glycosides

1991 ◽  
Vol 83 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Yohji Esashi ◽  
Shinichi Matsuyama ◽  
Hiroki Ashino ◽  
Maria Ogasawara ◽  
Ryo Hasegawa
Keyword(s):  
Seed Germination ◽  
Cyanogenic Glycosides ◽  
Beta Glucosidase

Allelopathic effect of cumin (Cuminum cyminum L.) on seed germination of three weeds

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Soleymanifard ◽  
R Naseri ◽  
A Mirzaei ◽  
H Naserirad
Keyword(s):  
Seed Germination ◽  
Allelopathic Effect ◽  
Cuminum Cyminum
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