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Genotype by Environment Interactions Modulate Sugarcane Response to Mechanical Wounding Stress
Publication date: Available online 25 October 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Mehtab Muhammad Aslam, Joseph K. KaranjaAbstractPlant growth, development and phenotypic plasticity are highly influenced by the genetic composition of a plant, environment, and genetic by environment interactions. The role of intraspecific genetic variance and environmental variations in mediating responses of commercially important crops such as sugarcane to wound stress is, however, poorly understood. Therefore, we utilized 10 sugarcane genotypes cultivated in different common gardens, and subsequently wounded...
Source: Physiological and Molecular Plant Pathology - October 25, 2019 Category: Molecular Biology Source Type: research

Brassica-aphid interaction: Challenges and prospects of genetic engineering for integrated aphid management
Publication date: Available online 17 October 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Surajit BhattacharyaAbstractOne of the most economically important groups of plants, the Brassica crops are cultivated throughout the world for their application as food, feed and vegetable oil purposes. However, the insect pests have been reported to be one of the major hindrances in raising the yield potential of Brassica crops and result in a significant economic loss every year. In terms of the extent of damage the mustard aphids (Lipaphis erysimi Kalt.) are found to be more severe, causing an overall reducti...
Source: Physiological and Molecular Plant Pathology - October 19, 2019 Category: Molecular Biology Source Type: research

Unraveling the metabolite signatures of maize genotypes showing differential response towards southern corn leaf blight by 1H-NMR and FTIR spectroscopy
Publication date: Available online 9 October 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Pashupat Vasmatkar, Kamaljit Kaur, P.P.S. Pannu, Gurjit Kaur, Harleen KaurAbstractSouthern corn leaf blight, caused by Drechslera maydis, is the most prevalent fungal disease in maize growing regions of India. This is the first study that identified genotypic variability among maize genotypes, LM 13, CM 140 and LM 15 (highly resistant, moderately resistant and highly susceptible towards infection, respectively) on the basis of metabolite profiling, using 1H-NMR and FTIR techniques. High intensity peaks of querceti...
Source: Physiological and Molecular Plant Pathology - October 10, 2019 Category: Molecular Biology Source Type: research

Bulked segregant analysis using next-generation sequencing for identification of genetic loci for charcoal rot resistance in soybean
In this study we report the use of bulked-segregant analysis (BSA) to map the genetic basis of resistance to charcoal rot in soybean PI 567562A, using a QTL-seq approach. Resistant and susceptible bulks from progenies of a biparental population (PI 567562A and PI 567437) were sequenced, and reads were aligned to the PI 567562A genome and used to calculate the SNP-index at each SNP position for the resistant and susceptible bulks. The average distributions of the SNP-index and Δ SNP-index across the genome were estimated for genomic intervals using a sliding window analysis with 2-Mb window size and a 10-kb step. Three gen...
Source: Physiological and Molecular Plant Pathology - October 10, 2019 Category: Molecular Biology Source Type: research

Geminiviruses: Molecular biodiversity and global distribution in Jatropha
Publication date: Available online 25 September 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Prashant More, Parinita Agarwal, Pradeep K. AgarwalAbstractJatropha is one of the most important crops for biodiesel production. Its yield has been severely hampered due to mosaic disease caused by geminiviruses. The Jatropha infecting geminiviruses reported from all over the world have significant genetic diversity. Begomoviruses infecting Jatropha are reported from the United States of America, Asia and Africa. There exist 85 complete nucleotide sequences of Jatropha geminiviruses, including 72 DNA-A segments...
Source: Physiological and Molecular Plant Pathology - September 26, 2019 Category: Molecular Biology Source Type: research

Brassinosteroid deficiency caused by the mutation of the HvDWARF gene influences the reactions of barley to powdery mildew
This study investigated the impact of mutation in the HvDWARF gene, encoding C6-oxidase involved in brassinosteroid (BR) biosynthesis, on disease resistance of barley against the fungal pathogen powdery mildew (Blumeria graminis f. sp. hordei). The mutation results in significant BR deficiency in leaf tissue. Since increase in the BR content by their exogenous application was reported to improve plant resistance to viral, bacterial and fungal infection, we wanted to find out, if lowered content of BR may affect plant resistance to this pathogen. The 527DK mutant carrying the aforementioned mutation and its respective wild ...
Source: Physiological and Molecular Plant Pathology - September 25, 2019 Category: Molecular Biology Source Type: research

Molecular characterization of the ERF family in susceptible poplar infected by virulent Melampsora larici-populina
Publication date: Available online 6 September 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Qiaoli Chen, Zhiying Wang, Danlei Li, Feng Wang, Ruizhi Zhang, Jianan WangAbstractMelampsora larici-populina causes serious poplar foliar diseases called rust worldwide. The ethylene response factor (ERF) family, which is one of the largest groups of transcription factors (TFs) families, is considered to play a crucial role in regulating networks related to plant disease resistance. To investigate the transcript profiles of ERF genes involved in poplar rust resistance, Populus nigra × P. deltoides (Pnd), wh...
Source: Physiological and Molecular Plant Pathology - September 7, 2019 Category: Molecular Biology Source Type: research

Characterization of synergy between Cucumber mosaic virus and Alternaria alternata in Nicotiana tabacum
Publication date: Available online 5 September 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Zhong-Qin Tang, Jing Shang, Lei Zhang, Jun-Bo Du, Hui Yang, Shu-Hua Zeng, Pei-Li Li, George Bawa, Liang Yu, Xin-Xin Hou, Wen-Yu YangAbstractCo-infections in plants regularly occur in natural ecosystems. In the present study, we simulated co-infection in Nicotiana tabacum (N. tabacum) with Cucumber mosaic virus (CMV) and Alternaria alternata (A. alternata) under laboratory conditions. In the co-infection system of CMV and A. alternata, severe oxidative stress was produced. High concentrations of reactive oxygen s...
Source: Physiological and Molecular Plant Pathology - September 7, 2019 Category: Molecular Biology Source Type: research

Comparative transcriptome analysis reveals the signal proteins and defence genes conferring foot rot (Phytophthora capsici sp. nov.) resistance in black pepper (Piper nigrum L.)
This study had the objective to identify the candidate genes involved in the foot rot field tolerance of black pepper through comparative transcriptome analysis. P. capsici tolerant/moderately resistant cultivar IISR-Shakthi and susceptible cultivar IISR-Subhakara were artificially inoculated under controlled conditions and mRNAs were isolated from the leaves of treated and control plants at 0, 2, 4, 6, 12, 24, 48 h after inoculation. Transcriptome profiles were compared using DD-RT PCR on cDNA fragments and differentially expressed bands were sequenced. Sequence analysis revealed the involvement of signal proteins and d...
Source: Physiological and Molecular Plant Pathology - August 30, 2019 Category: Molecular Biology Source Type: research

High concentration of ferulic acid in rhizosphere soil accounts for the occurrence of Fusarium wilt during the seedling stages of strawberry plants
Publication date: Available online 13 August 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Gei-Lin Tian, Yan-Meng Bi, Ji-Dong Cheng, Fang-Fang Zhang, Tian-Hua Zhou, Zhen-Jun Sun, Lu-Sheng ZhangAbstractHere, we elucidated the relationship between phenolic acids in strawberry rhizosphere soil and the occurrence of Fusarium wilt. Ten phenolic acids were identified, and the concentration of ferulic acid (FA) in the rhizosphere was higher than other phenolic acids at the seedling stage of strawberry plants. Treatment with relatively high FA concentrations enhanced the conidial germination and colony growth o...
Source: Physiological and Molecular Plant Pathology - August 13, 2019 Category: Molecular Biology Source Type: research

The accumulation of phenolic compounds and increased activities of related enzymes contribute to early defense against walnut blight
Publication date: Available online 6 August 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Shijiao Jiang, Shan Han, Dan He, Guangli Cao, Ke Fang, Xu Xiao, Jianming Yi, Xueqin WanAbstractXanthomonas arboricola pv. juglandis (Xaj) is the causal pathogen of walnut blight. This work evaluates the correlations between selected biochemical responses to Xaj and the degree of blight sensitivity in ten genotypes. Activity of superoxide dismutase (SOD), peroxidase (POX), l-phenylalanine ammonia-lyase (PAL) and polyphenol oxidase (PPO), and content of phenolic compounds and malondialdehyde (MDA) significantly incre...
Source: Physiological and Molecular Plant Pathology - August 7, 2019 Category: Molecular Biology Source Type: research

Histopathological evidences of early grapevine leaf senescence caused by Phakopsora euvitis colonisation
Publication date: Available online 5 August 2019Source: Physiological and Molecular Plant PathologyAuthor(s): J.B. Rasera, L. Amorim, J.P.R. Marques, M.K.M. Soares, B. Appezzato-da-GlóriaAbstractGrapevine rust, caused by Phakopsora euvitis, has recently been introduced in Brazil; however, this disease has spread nationwide, causing significant damage to vineyards. The pathogen reduces CO2 assimilation and photoassimilate availability in host plants. Grapevine rust causes early defoliation and yield reduction, in the subsequent crop, since storage of reserves is compromised. Infection, colonisation and defoliation processe...
Source: Physiological and Molecular Plant Pathology - August 6, 2019 Category: Molecular Biology Source Type: research

Topical application of double-stranded RNA molecules containing sequences of Tomato leaf curl virus and Cucumber mosaic virus confers protection against the cognate viruses
Publication date: Available online 30 July 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Tsewang Namgial, Athanasios Kaldis, Supriya Chakraborty, Andreas VoloudakisAbstractThe Tomato leaf curl virus (ToLCV) is a bipartite (DNA) geminivirus whereas Cucumber mosaic virus (CMV) is a tripartite RNA virus, both infecting a wide range of host plants. RNAi that is triggered by double-stranded RNA (dsRNA) molecules, is a powerful means to control plant viruses in transgenic plants, as well as in a non-transgenic manner in a process designated as ‘RNA-based vaccination’. DsRNA molecules were made for AC1/AC4...
Source: Physiological and Molecular Plant Pathology - July 30, 2019 Category: Molecular Biology Source Type: research

Editorial Board
Publication date: August 2019Source: Physiological and Molecular Plant Pathology, Volume 107Author(s): (Source: Physiological and Molecular Plant Pathology)
Source: Physiological and Molecular Plant Pathology - July 30, 2019 Category: Molecular Biology Source Type: research

Genome-wide identification and expression analysis of the dof (DNA binding with one finger) protein family in monocot and dicot species
This study offered novel insights in the phylogenetic, collinear, expressional and functional analysis of Dof proteins and contributed to the further investigation of Dof proteins in plants. (Source: Physiological and Molecular Plant Pathology)
Source: Physiological and Molecular Plant Pathology - July 26, 2019 Category: Molecular Biology Source Type: research