Pollen and tapetal development in Securidaca longepedunculata
نویسندگان
چکیده
منابع مشابه
Bisdesmosidic saponins from Securidaca longepedunculata roots: evaluation of deterrency and toxicity to Coleopteran storage pests.
Powdered dry root bark of Securidaca longepedunculata was mixed with maize and cowpea and effectively reduced the numbers of Sitophilus zeamais and Callosobruchus maculatus emerging from these commodities, respectively, more than 9 months after treatment. This effect was reciprocated in grain treated with a methanol extract of the root bark, indicating that compounds were present that were ovip...
متن کاملAltered tapetal PCD and pollen wall development in the Arabidopsis ms1 mutant.
The Arabidopsis male sterility1 mutation results in mature anthers that are devoid of pollen. Meiosis and early development progress normally; however, after microspore release, the microspore cytoplasm and tapetum become abnormally granular and vacuolated, and degeneration occurs. Pollen wall development is seriously affected; primexine formation within the callose wall appears to occur normal...
متن کاملMALE STERILITY1 is required for tapetal development and pollen wall biosynthesis.
The Arabidopsis thaliana MALE STERILITY1 (MS1) gene is critical for viable pollen formation and has homology to the PHD-finger class of transcription factors; however, its role in pollen development has not been fully defined. We show that MS1 transcription appears to be autoregulated by the wild-type MS1 transcript or protein. Using a functional green fluorescent protein (GFP) fusion to analyz...
متن کاملDefective in Tapetal development and function 1 is essential for anther development and tapetal function for microspore maturation in Arabidopsis.
In Arabidopsis, the tapetum plays important roles in anther development by providing enzymes for callose dissolution and materials for pollen-wall formation, and by supplying nutrients for pollen development. Here, we report the identification and characterization of a male-sterile mutant, defective in tapetal development and function 1 (tdf1), that exhibits irregular division and dysfunction o...
متن کاملThe MYB80 transcription factor is required for pollen development and the regulation of tapetal programmed cell death in Arabidopsis thaliana.
Arabidopsis thaliana MYB80 (formerly MYB103) is expressed in the tapetum and microspores between anther developmental stages 6 and 10. MYB80 encodes a MYB transcription factor that is essential for tapetal and pollen development. Using microarray analysis of anther mRNA, we identified 404 genes differentially expressed in the myb80 mutant. Employing the glucocorticoid receptor system, the expre...
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ژورنال
عنوان ژورنال: South African Journal of Botany
سال: 1985
ISSN: 0254-6299
DOI: 10.1016/s0254-6299(16)31683-0