597| © www.globalsciencepg.org Biolife | 2015 | Vol 3 | Issue 3 B I O L I F E R E S E A R C H A R T I C L E Biochemical responses of Trioza jambolanae infected Syzygium jambos leaves from Kota District, Rajasthan Kiran Choudhary 1 * and Krishnendra Singh Nama 2 1 Department of Botany, Govt. PG College, Kota Raj, Rajasthan 325003 2 Career Point University, Kota Raj, Rajasthan 325003 *Email: choudharykiran01@gamil.com ABSTRACT Galls are specialized plant structures formed by the alteration of normal plant tissues by the galling organisms. Generally galls provide a food source to the insect for their growth and development. Present study elaborates the biochemical changes in leaf galls of Syzygium jambos due to the infection of Trioza jambolanae. The amount of total chlorophyll, carbohydrate, protein, phenol, amino acids and proline were compared in healthy and galled leaf extracts. Nutritive tissue, on which the insect feeds, contained high amount of phenol and proline whereas low amount of total chlorophyll, carbohydrate, protein and amino acids compared with healthy leaves. Our results indicate that distribution of biochemical defences in this psyllid gall differs significantly from the leaf tissue from which it is formed. This study suggests that the gall is manipulated by the insect to enhance its food and protective value. Keywords: Galls, Biochemicals, Nutritive tissue, Psyllids, Defence. INTRODUCTION Plant diseases adversely affect the quality of plant by inducing higher level of undesirable constituents in them. Plants may alter their biochemistry to tolerate a particular stress that occurs infrequently, but the metabolic cost is high for such temporary adjustments. Diseases, which are generally detrimental to plant growth, adversely affect metabolism of plant and cause important modifications in them. Such modifications may lead to accumulation or depletion of certain metabolites resulting in an imbalance in the levels of certain metabolites. Galls are the typical plant growths induced by host-specific organisms in which the insect provides the stimulus and the plant initiates the growth response against the galling organism like bacteria, mites and insects. Syzigium jambos (Family: Myrtaceae) is a plant cultivated in India and propagated by seeds. In Kota district, Rajasthan (India) the gall forming psyllid, Trioza jambolanae attacks the leaves of most of the Syzigium jambos trees in late April indicating large galls on leaf lamina and at the time of the formation of fruits, this psyllid also attacks on fruits which interfere with the biochemical processes of healthy plant. Changes in normal physiological condition of plant due to disease affect the yield of plant. Therefore the present investigation was carried out to study the effect of Trioza jambolanae on the photosynthetic efficiency of Syzygium jambos and to evaluate the effect of the psyllid on the quantity of various metabolites like carbohydrate, protein, phenol AN INTERNATIONAL QUARTERLY JOURNAL OF BIOLOGY & LIFE SCIENCES 3(3):597-604 ISSN (online): 2320-4257 www.biolifejournals.com How to cite this article: Kiran Choudhary and Krishnendra Singh Nama (2015). Biochemical responses of Trioza jambolanae infected Syzygium jambos leaves from Kota District, Rajasthan. Biolife, 3(3), pp 597-604.