Leaf carbohydrate status in Lolium temulentum during the induction of flowering
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 کاملRegulation of flowering in the long-day grass Lolium temulentum by gibberellins and the FLOWERING LOCUS T gene.
Seasonal control of flowering often involves leaf sensing of daylength coupled to time measurement and generation and transport of florigenic signals to the shoot apex. We show that transmitted signals in the grass Lolium temulentum may include gibberellins (GAs) and the FLOWERING LOCUS T (FT) gene. Within 2 h of starting a florally inductive long day (LD), expression of a 20-oxidase GA biosynt...
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 کاملPoisonous Foodgrain: Wheat Mixed with Lolium Temulentum
In the March issue of this journal there appeared under 'Medical News' (p. 148; an abstract from an article by Brinton) an account of an epidemic at Aden caused by the seed of Lolium temulentum, a weed which grows in wheat fields. The wheat was brought from Abyssinia and milled locally by machinery. The consumption of the product made the inhabitants go down with symptoms of acute intoxication....
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1997
ISSN: 0028-646X,1469-8137
DOI: 10.1046/j.1469-8137.1997.00629.x