학술논문
Arsenic reduced scale-insect infestation on arsenic hyperaccumulator Pteris vittata L
Document Type
Report
Source
Environmental and Experimental Botany. March, 2009, Vol. 65 Issue 2-3, p282, 5 p.
Subject
Language
English
ISSN
0098-8472
Abstract
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.envexpbot.2008.09.010 Byline: Shiny Mathews (a), Lena Q. Ma (a), Bala Rathinasabapathi (b), Robert H. Stamps (c) Keywords: Hyperaccumulation; Heavy metal; Chinese brake fern; Elemental defense; Saissetia neglecta Abstract: Arsenic hyperaccumulation by Pteris vittata L. (Chinese brake fern) may serve as a defense mechanism against herbivore attack. This study examined the effects of arsenic exposure (0, 5, 15 and 30mgkg.sup.-1) on scale insect (Saissetia neglecta) infestation of P. vittata. Scale insects were counted as a percentage fallen from the plant to the total number of insects after 1 week of As-treatment. The arsenic concentrations in the fronds ranged from 5.40 to 812mgkg.sup.-1. Greater arsenic concentrations resulted in higher percentage of fallen-scale insects (17.2-55.0%). Lower arsenic concentrations ([less than or equal to]5mgkg.sup.-1) showed significantly lower effect on the population compared to 15-30mgkg.sup.-1 (p Author Affiliation: (a) Soil and Water Science Department, University of Florida, Gainesville, FL 32611, United States (b) Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, United States (c) Department of Environmental Horticulture, MREC, University of Florida, Apopka, FL 32703, United States Article History: Received 4 September 2008; Accepted 30 September 2008