Leaf chemical changes induced in Populus trichocarpa by enhanced UV-B radiation and concomitant effects on herbivory by Chrysomela scripta (Coleoptera: Chrysomelidae)
نویسندگان
چکیده
منابع مشابه
Chrysomela scripta, Plagiodera versicolora (Coleoptera: Chrysomelidae), and Trichoplusia ni (Lepidoptera: Noctuidae) Track Specific Leaf Developmental Stages
It is well recognized that host-specialized folivores prefer to feed on young in comparison to old leaves. However, the capacity of young leaf feeders to track speciÞc leaf developmental stages has not been clearly demonstrated. Using three insect folivores and two plant species, we show that nitrogen (N) fertilization changes leaf development and that herbivores track these changes in leaf dev...
متن کاملPOPULATION ECOLOGY Cottonwood Leaf Beetle (Coleoptera: Chrysomelidae) Larval Performance on Eight Populus Clones
The cottonwood leaf beetle, Chrysomela scripta F., is the most serious defoliator of young plantation-grown Populus in the eastern United States, yet there is a paucity of data on larval feedingperformance acrossPopulus clones used in treebreeding. Field experimentswere conducted in 1998 and 1999 to determine the overall feeding performance of larval C. scripta on 8 Populus selections from a pe...
متن کاملPHYSIOLOGICAL ECOLOGY Effects of Cottonwood Leaf Beetle (Coleoptera: Chrysomelidae) Larval Defoliation, Clone, and Season on Populus Foliar Phagostimulants
The cottonwood leaf beetle, Chrysomela scripta F., is a serious defoliator of plantation Populus in the United States. Current control methods include biorational and synthetic chemicals as well as selecting Populus clones resistant or tolerant to C. scripta defoliation. SpeciÞc ratios of long-chain fatty alcohols to alpha-tocopherylquinone ( -TQ) on the leaf surface of Populus spp. act as phag...
متن کاملزیستشناسی مقدماتی سوسک برگخوار Chrysomela saliceti Suffrian (Coleoptera: Chrysomelidae)
سوسک‌های برگخوار جنس Chrysomela از آفات مهم نهالستان‌ها و صنوبرکاری‌ها به‌شمار می‌روند. گونۀ Chrysomela populi در بیشتر مناطق صنوبرکاری ایران فعالیت دارد و پژوهش‌هایی هم در مورد آن صورت گرفته است، اما اطلاعات ما در مورد گونه‌های دیگر این جنس بسیار اندک است. زیست‌شناسی گونۀ Chrysomela saliceti با استفاده از حشرات زمستان‌گذرانی کرده در آزمایشگاه (حرارت 1 ± 25 درجۀ سان...
متن کاملUltraviolet-B radiation alters phenolic salicylate and flavonoid composition of Populus trichocarpa leaves.
We investigated foliar phenolic composition of field- and greenhouse-grown Populus trichocarpa Torr. & A. Gray (black cottonwood) ramets subjected to near zero (0x), ambient (1x) or twice ambient (2x) concentrations of biologically effective ultraviolet-B (UV-B) radiation. After a 3-month treatment period, several age classes of foliage samples were harvested and the phenolic compounds extracte...
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ژورنال
عنوان ژورنال: Tree Physiology
سال: 2002
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/22.15-16.1137