
Authors: C. Heideman, R.E.F. Munhoz, J.R. Pattaro J�ºnior and M.A. Fernandez
Diatraea saccharalis is an insect that causes considerable losses in the sugar cane crop. Our aim was to contribute to the knowledge of the biology of D. saccharalis, with the report of DNA fragments involved in the differentiation between the male and female of this species using the RAPD sex molecular marker GyakuU-13, which.. Read More»
Authors: K.A. Abd-Elsalam, S. Roshdy, O.E. Amin and M. Rabani
Colletotrichum musae is the causal agent of anthracnose in banana fruits; infection by this fungal pathogen results in severe post-harvest losses. Eleven C. musae isolates were obtained from infected imported banana fruit samples with anthracnose lesions collected from different markets in Riyadh, Saudi Arabia. The pathogenic,.. Read More»
Authors: Z.X. Chu, Q. Ma, Y.X. Lin, X.L. Tang, Y.Q. Zhou, S.W. Zhu, J. Fan and B.J. Cheng
Cytokinins play many vital roles in plant development and physiology. In plants, cytokinin signals are sensed and transduced by the two-component signal system. This signaling cascade is typically composed of three proteins: a sensory histidine kinase, a histidine phosphotransfer protein, and a response regulator. Through a co.. Read More»
Authors: M.A. Moslem, A. Mashraqi, K.A. Abd-Elsalam, A.H. Bahkali and M.A. Elnagaer
Ten fungal isolates from coffee beans were morphologically identified as Aspergillus niger, A. ochraceus and A. carbonarius (N = 5, 3, and 2, respectively). Only one isolate, morphologically identified as A. niger, was unable to produce ochratoxin A (OTA). This may be a new species in the Aspergillus section Nigri. OTA levels .. Read More»
Authors: M.A.O. Alves1, J.E. Monteiro-Junior1, C.A.M. Oliveira1, R.M. Silveira1, I.R. Costa1 and R. Maggioni2
Cytogenetic studies in Gymnothorax funebris revealed a diploid chromosome number 2n = 42 (6 metacentrics, 4 submetacentrics, and 32 acrocentrics, FN = 52). The results obtained are novel and similar to those previously described for species belonging to Muraenidae family. The conventional karyotype is also novel and divergent .. Read More»
Authors: Y.F. Niu, M.H. Zhang, W.H. Xie, J.N. Li, Y.F. Gao, W.D. Yang, J.S. Liu and H.Y. Li
Genetic transformation is useful for basic research and applied biotechnology. However, genetic transformation of microalgae is usually quite difficult due to the technical limitations of existing methods. We cloned the promoter and terminator of the nitrate reductase gene from the microalga Phaeodactylum tricornutum and used .. Read More»
Authors: F. Al-Qurainy, S. Khan, M. Nadeem, M. Tarroum and A.R.Z. Gaafar
Molecular markers, mainly DNA-based are potential tools for DNA barcoding and phylogenetic study. The plant species belonging to the Nepeta genus have important medicinal value because of the presence of nepetalactones, and they have been used to treat human diseases. We amplified nuclear and chloroplast gene loci to develop a.. Read More»
Authors: I. Gatti, M.A. Esp�³sito, P. Almir�³n, V.P. Cravero and E.L. Cointry
We characterized 13 accessions of dry peas of different origins from various growing regions in Argentina, based on three replications of 20 plants cultivated in 2009 and 2010 in a greenhouse, with the objective of selecting those with favorable characteristics for use in breeding programs. Significant differences were found f.. Read More»
Authors: F.C. Santos, A.C.S. Clemente, F. Caixeta and S.D.V.F. Rosa
Coffee seeds begin to develop shortly after fertilization and can take 6 to 8 months to complete their formation, a period during which all the characteristics of the mature seed are determined, directly influencing physiological quality. However, little is known about the molecular mechanisms that act during coffee seed matur.. Read More»
Authors: B. Liu, J.Q. Li, X.D. Liu, M.Q. Shahid, L.G. Shi and Y.G. Lu
Pollen sterility is one of the main hindrances against the utilization of strong intersubspecific (indica-japonica) heterosis in rice. We looked for neutral alleles at known pollen sterility loci Sd and Se that could overcome this pollen sterility characteristic. Taichung 65, a typical japonica cultivar, and its near isogenic .. Read More»