Cell Wall Invertase in Tobacco Crown Gall Cells
نویسندگان
چکیده
منابع مشابه
A tobacco cDNA coding for cell-wall invertase.
The CWI of higher plants is a structurally well-characterized basic protein (pI approximately 9.5) showing a complex glycosylation pattern. CWIs of severa1 species have been characterized at the protein leve1 (Laurière et al., 1988; Weil and Rausch, 1994, and refs. cited therein). Recently, complete cDNA clones have been obtained for CWIs of carrot (Sturm and Chrispeels, 1990), Arabidopsis thal...
متن کاملHormonal control of tobacco crown gall tumor morphology.
The endogenous levels of auxin and cytokinin in teratoma and unorganized tobacco (Nicotiana tabacum L. var Wisconsin #38) crown gall tumor tissues were determined. Teratoma tissues contain levels of auxin and cytokinin favorable for shoot formation, whereas unorganized tumors contain levels of auxin that suppress shoot formation. This conclusion is based upon the observation that when levels of...
متن کاملRecovery of crown-gall tumor cells.
nant animal cells are distinguished from healthy or inflaznmstory cells. In emphasizing the perma nency of the cellular alteration, Kidd (6) states that “Cancercells remain such until they die . . they never turn back en masse towards the benign or normal state. . . .“The inability to accomplish a reversal of malignant to normal cells under con trolled conditions has, however, served as a s...
متن کاملRNA interference-mediated repression of cell wall invertase impairs defense in source leaves of tobacco.
The significance of cell wall invertase (cwINV) for plant defense was investigated by comparing wild-type tobacco (Nicotiana tabacum) Samsun NN (SNN) with plants with RNA interference (RNAi)-mediated repression of cwINV (SNNcwINV). In source leaves of SNNcwINV, the activity of cwINV was repressed by about 90%. Sucrose export and apoplastic carbohydrate levels were significantly reduced, while p...
متن کاملA second cell wall acid invertase gene in Arabidopsis thaliana.
Invertases, or P-fructofuranosidases, hydrolyze SUC into Fru and Glc. Immobilized acid invertases in plants have been described as localized in the cell wall (Eschrich, 1980; Gogarten, 1986; Sturm and Chrispeels, 1990). Soluble acid invertases were ascribed to the vacuole (Leigh et al., 1979). At least in dicotyledonous plants these organelle-specific isoforms are encoded by separate genes (Stu...
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: Plant Physiology
سال: 1990
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.94.4.1575