Some Conspicuous Traits in Domesticated Rice Oryza Sativa, Due To Recessive Alleles
Journal Title: Journal of Plant Science and Research - Year 2016, Vol 3, Issue 1
Abstract
Evolutionarily organisms are bestowed with salient morphological features which are considered to be an outcome of activity of functional gene products. However, there are several important features present in organisms owing to recessive alleles in specific gene loci. Interestingly, prevalence of such features due to recessive alleles of gene(s) raises intriguing questions in regard to evolution of the functional alleles in organisms! To have some understanding of this unique phenomenon, we examined four frequently confronted recessive traits in rice plant (Oryza sativa) such as (i) fragrance (ii) semi-dwarf height (iii) resistance to pathogens and (iv) non-seed shattering feature and discussed in brief the genetics, biochemistry and evolutionary significance of these traits in rice. These important traits in rice are due to mutations in genes such as BADH2, sd1, Xa13 and seed-shattering loci respectively, that otherwise encode essential functional attributes in plant systems. Genes with paralogs possibly attribute to recessive traits through their differential expression patterns. New facts are evolving on role of epigenetic mutations conferring heritable changes in gene expression that are not due to changes in the underlying gene sequence.
Authors and Affiliations
Anjan Barman
A Protocol for the Control of Spongy Tissue Disorder in Alphonso Mango by Pre-Harvest Treatments
Spongy tissue (ST) of Alphonso mango is the most important physiological disorder which causes grave loss of fruit quality in ripe fruits without showing external symptoms. Until recently, there was no remedy to overcome...
Variability Studies for Seed and Seedling Traits in Undi (Calophyllum Inophyllum L.) from Different Zoneso South India
The present investigation was carried out at Forest College and Research Institute, Mettupalayam, Tamil Nadu to identify the best half sibs of Calophyllum inophyllum across its natural distribution of south India for fur...
Influence of Seed Moisture Content on Seed Germination and Quality in Canes
A comprehensive laboratory study entitled “Influence of seed moisture on germination and seed quality in in Canes: Calamus thwaitesii and Calamus nagabettai” was undertaken at the Department of Forest Biology and Tree Im...
Therapeutic Importance of Fenugreek (Trigonella foenum-graecum L.): A Review
Herbs have high medicinal value in Indian homes. Fenugreek (Trigonella foenum-graecum) is one of the most promising medicinal herbs and having nutritional value found on the continents of Asia, Europe, Africa and Austral...
Evaluation of Four Essential Oils against Angoumois Grain Moth, Sitotroga Cerealella (Olivier)
Effect of four essential oils of Cinnamomum camphora (L.) J. Presl, Cymbopogon flexuosus (Nees ex Steud.) J.F. Watson, Ageratum conyzoides L. and Ocimum gratissimum L. was investigated against Sitotroga cerealella (Olive...