Structure and Function of Tomato Leaf Chloroplasts During Ammonium Toxicity
نویسندگان
چکیده
منابع مشابه
Structure and function of tomato leaf chloroplasts during ammonium toxicity.
Ammonium toxicity resulted in morphological modifications of tomato leaf chloroplasts. The chloroplasts, which are normally flattened around the protoplast periphery, became ellipsoidally rounded and dispersed through the protoplasm. The first apparent effect of plastid degradation was development of many vesicles from the fretwork. Later the grana lamellae swelled, and some disappeared. Eventu...
متن کاملDNA Content of Beta vulgaris Chloroplasts during Leaf Cell Expansion.
During the growth of beet leaves from 2 to 3 to 25 to 30 centimeters, the leaf cells increase in size, the average number of chloroplasts per cell increases from 11 to 65 and the amount of chloroplast DNA per cell increases from 1100 to 1900 plastome copies. The average number of copies of the plastome per chloroplast decreases from 104 in 2 to 3-centimeter leaves to 29 in 25 to 30-centimeter l...
متن کاملSurprisingly Weak Coordination between Leaf Structure and Function among Closely-related 1 Tomato Species 2 3
15 Natural selection may often favor coordination between different traits, or phenotypic 16 integration, in order to most efficiently acquire and deploy scarce resources. As leaves are the 17 primary photosynthetic organ in plants, many have proposed that leaf physiology, biochemistry, 18 and anatomical structure are coordinated along a functional trait spectrum from fast, resource-19 acquisit...
متن کاملthe underlying structure of language proficiency and the proficiency level
هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...
15 صفحه اولPhenotypic and Molecular Screening of Tomato Germplasm for Resistance to Tomato Yellow Leaf Curl Virus
Tomato yellow leaf curl virus (TYLCV) is a major tomato virus in tropical and subtropical regions. In this study, 134 accessions of Solanum lycopersicum and six accessions of Solanum peruvianum were assessed for resistance to an Iranian isolate of TYLCV. Plants were inoculated using whiteflies (Bemisia tabaci) and the reaction of plants was evaluated based on either disease symptoms or viral DN...
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: 1967
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.42.9.1229