Inflorescence Initiation in Lolium Temulentum L. X. Changes in 32p Incorporation into Nucleic Acids of the Shoot Apex at Induction
نویسندگان
چکیده
منابع مشابه
Long-day induction of flowering in Lolium temulentum involves sequential increases in specific gibberellins at the shoot apex.
One challenge for plant biology has been to identify floral stimuli at the shoot apex. Using sensitive and specific gas chromatography-mass spectrometry techniques, we have followed changes in gibberellins (GAs) at the shoot apex during long day (LD)-regulated induction of flowering in the grass Lolium temulentum. Two separate roles of GAs in flowering are indicated. First, within 8 h of an ind...
متن کاملMorphogenesis at the inflorescence shoot apex of Anagallis arvensis: surface geometry and growth in comparison with the vegetative shoot
Quantitative analysis of geometry and surface growth based on the sequential replica method is used to compare morphogenesis at the shoot apex of Anagallis arvensis in the reproductive and vegetative phases of development. Formation of three types of lateral organs takes place at the Anagallis shoot apical meristem (SAM): vegetative leaf primordia are formed during the vegetative phase and leaf...
متن کاملIncorporation of 32P into nucleic acids in mammary tissue of mice susceptible and resistant to breast cancer.
Incorporation of 32p into RNA and DNA fractions of mammary and tumor tissue was studied in virgin C3H mice, which are susceptible to the development of breast cancer. Virgin C57BL mice, which are resistant to the development of breast cancer, were the controls. Virgin C3H and C57BL mice, 4 and a months old, and tumor-bearing C3H mice were used as the experimental groups. The incorporation of 32...
متن کاملThe incorporation of guanine into nucleic acids of tumorbearing mice.
Since guanine is a normal constituent of nucleic acids, the possibility of the direct incorporation of this purine is of great significance in the biosynthesis of nucleic acids. Earlier reports in the literature indicated that preformed guanine was not utilized for nucleic acid production in the rat (1, Z), but more recent evidence suggested that a trace of guanine may be incorporated in the nu...
متن کاملGibberellins, Endogenous and Applied, in Relation to Flower Induction in the Long-Day Plant Lolium temulentum.
Changes in endogenous gibberellin-like substances (GAs) and related compounds in the shoot apices of Lolium temulentum during and after flower induction by one long day was examined for plants grown in three consecutive years. The total GA level in the shoot apical tissue was high (up to 42 micrograms per gram dry weight, or 3 x 10(-5) molar GA(3) equivalents), increasing several-fold on the da...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Australian Journal of Biological Sciences
سال: 1967
ISSN: 0004-9417
DOI: 10.1071/bi9670013