Effect of glyphosate on ethylene production in tobacco callus.
نویسندگان
چکیده
Glyphosate (N-phosphonomethylglycine) caused a significant decrease or a slight increase in ethylene production in tobacco callus (Nicotiana tabacum L.) depending on the concentration of indole-3-acetic acid (IAA) present in the medium. IAA stimulated ethylene production, but a pretreatment with glyphosate greatly reduced the IAA-induced ethylene production. Inasmuch as glyphosate treatment promoted the metabolism of IAA, the decrease in ethylene production induced by glyphosate is attributed to the rapid loss of free IAA in the treated tissue.
منابع مشابه
Requirements for extraction of polyribosomes from plant callus cultures.
A procedure was developed to isolate polyribosomes from plant cell cultures. Tobacco callus extracted in 10 mm MgCl(2), 80 mm KCl, 250 mm sucrose, and 140 mm tris-HCl (pH 8.2) yielded larger amounts of polysomes than cells extracted in higher or lower ionic strength or pH buffers. Optimal conditions for extraction of polysomes from soybean callus were identical except the most suitable pH for r...
متن کاملRole of Ethylene in Abscisic Acid-induced Callus Formation in Citrus Bud Cultures.
The induction of callus formation in cultured buds of Shamouti orange (Citrus sinensis [L.] Osbeck) by abscisic acid (ABA) is a multiphasic process. (Altman, and Goren 1974 Physiol Plant 32: 55.) A study of the mediation by ethylene on this effect of ABA was undertaken. It was found that: (a) ethylene and (2-chloroethyl) phosphonic acid, as well as ABA, induced callus formation; (b) callus indu...
متن کاملBacterial responses to environmental herbicide pollutants (glyphosate and paraquat)
The toxic effect of herbicides on non- target microorganisms may influence degradation of organic matter resulting in changes to nutrient cycling. In the present study, different strains of bacteria incubated in media containing different concentrations of glyphosate and paraquat were assessed over a period of two incubation terms. The deleterious impact of the herbicide was observed as glyphos...
متن کاملA Review on Production of Glyphosate-Resistant Plants with Emphasis on Molecular Methods
Herbicide-resistant plants are one of the most common plants that comprise the majority of the total population of transgenic plants. Glyphosate is an herbicide that controls a wide range of plant species. Position of these herbicides reaction is 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) that only exists in plants and some bacteria. This herbicide was known to be suitable and safe for...
متن کاملAcute toxicity effect of glyphosate on survival rate of common carp, Cyprinus carpio
Background: Herbicides are usually used to control weeds and some of them like glyphosate are nonsele ctive herbicides. Aquatic environments are usually the last destinations of agricultural pesticides, which disrupt the metabolic processes of organisms. Thus, the aim of this study was to evaluate acute toxicity of glyphosate on the survival rate of common carp, Cyprinus carpio. Methods: A to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Plant physiology
دوره 72 3 شماره
صفحات -
تاریخ انتشار 1983