A Lily Stylar Pectin Is Necessary for Pollen Tube Adhesion to an in Vitro Stylar Matrix
نویسندگان
چکیده
منابع مشابه
A lily stylar pectin is necessary for pollen tube adhesion to an in vitro stylar matrix.
Pollen tube cells adhere to the wall surface of the stylar transmitting tract epidermis in lily. This adhesion has been proposed as essential for the proper delivery of the sperm cells to the ovule. An in vitro adhesion bioassay has been used to isolate two stylar molecules required for lily pollen tube adhesion. The first molecule was determined to be a small, cysteine-rich protein with some s...
متن کاملA lipid transfer-like protein is necessary for lily pollen tube adhesion to an in vitro stylar matrix.
Flowering plants possess specialized extracellular matrices in the female organs of the flower that support pollen tube growth and sperm cell transfer along the transmitting tract of the gynoecium. Transport of the pollen tube cell and the sperm cells involves a cell adhesion and migration event in species such as lily that possess a transmitting tract epidermis in the stigma, style, and ovary....
متن کاملOsCNGC13 promotes seed-setting rate by facilitating pollen tube growth in stylar tissues
Seed-setting rate is a critical determinant of grain yield in rice (Oryza sativa L.). Rapid and healthy pollen tube growth in the style is required for high seed-setting rate. The molecular mechanisms governing this process remain largely unknown. In this study, we isolate a dominant low seed-setting rate rice mutant, sss1-D. Cellular examination results show that pollen tube growth is blocked ...
متن کاملEffects of Previous Pollination and Stylar Ethylene on Pollen Tube Growth in Petunia hybrida Styles.
The effect of ethylene on the growth rate of pollen tubes in styles of Petunia hybrida was examined. Apart from its strong inhibition of pollination-induced ethylene synthesis, aminoethoxyvinylglycine, placed on the stigma, did not impede tube growth. The inhibitors of the action of ethylene, silver thiosulfate and 2,5-norbornadiene, were similarly ineffective. Application of the ethylene precu...
متن کاملA major stylar matrix polypeptide (sp41) is a member of the pathogenesis-related proteins superclass.
A novel stylar-specific glycosylated protein, sp41, was characterized. Sp41 constitutes greater than 12% of the transmitting tract tissue soluble proteins and is mainly localized in the extracellular matrix. Two cDNA clones corresponding to sp41 mRNA were isolated and sequenced. The decoded sequences are, respectively, 80% and 49% homologous to acidic and basic pathogen-induced (1-3)-beta-gluca...
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: The Plant Cell
سال: 2000
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.12.9.1737