A5012203067- Plant-Microbe Interactions and Immunity
- Plant Pathogenic Bacteria Studies
- Plant Physiology and Cultivation Studies
- Plant pathogens and resistance mechanisms
- Plant Pathogens and Fungal Diseases
- Plant Reproductive Biology
- Genetic Mapping and Diversity in Plants and Animals
- Plant Parasitism and Resistance
- Photosynthetic Processes and Mechanisms
- Plant Molecular Biology Research
- Plant Virus Research Studies
- Legume Nitrogen Fixing Symbiosis
- Wheat and Barley Genetics and Pathology
- Berry genetics and cultivation research
- Genetics and Plant Breeding
- Nitrogen and Sulfur Effects on Brassica
- Postharvest Quality and Shelf Life Management
- Chromosomal and Genetic Variations
- Antioxidant Activity and Oxidative Stress
- Plant Disease Resistance and Genetics
- Nematode management and characterization studies
- Insect symbiosis and bacterial influences
- Plant Gene Expression Analysis
- Research on scale insects
- Agriculture, Plant Science, Crop Management
Plant & Food Research
2017-2025
Palmerston North Hospital
2018-2021
Massey University
2012-2017
University of Agriculture Faisalabad
2010
Most published genome sequences are drafts, and most dominated by computational gene prediction. Draft genomes typically incorporate considerable sequence data that not assigned to chromosomes, predicted genes without quality confidence measures. The current Actinidia chinensis (kiwifruit) 'Hongyang' draft has 164 Mb of unassigned pseudo-chromosomes, omissions have been identified in the models.A second an A. (genotype Red5) was fully sequenced. This new resulted a 554.0 assembly with all...
Testing effector knockout strains of the Pseudomonas syringae pv. actinidiae biovar 3 (Psa3) for reduced in planta growth their native kiwifruit host revealed a number nonredundant effectors that contribute to Psa3 virulence. Conversely, complementation weak pathogen P. actinidifoliorum (Pfm) increased identified redundant effectors. hopAZ1a and HopS2b entire exchangeable locus (ΔEEL; 10 effectors) were significant contributors bacterial colonisation additive effects on Four EEL (HopD1a,...
Outside Front Cover: The cover image is based on the article Identification and Characterization of Innate Immunity in Actinidia melanandra Response to Pseudomonas syringae pv. actinidiae by Jay Jayaraman et al., https://doi.org/10.1111/pce.15189.
Pseudomonas syringae pv. actinidiae (Psa) biovar 3, a virulent, canker-inducing pathogen is an economic threat to the kiwifruit (Actinidia spp.) industry worldwide. The commercially grown diploid (2×) A. chinensis var. more susceptible Psa than tetraploid and hexaploid kiwifruit. However information on genetic loci modulating resistance in not available. Here we report mapping of quantitative trait (QTLs) regulating population, derived from cross between elite Psa-susceptible 'Hort16A'...
Summary O ‐acetylserine (thiol) lyases ( OASTL s) are evolutionarily conserved proteins among many prokaryotes and eukaryotes that perform sulfur acquisition synthesis of cysteine. A mutation in the cytosolic ‐ 1 protein ONSET OF LEAF DEATH 3 OLD 3) was previously shown to reduce activity old3‐1 vitro cause auto‐necrosis specific Arabidopsis accessions. Here we investigated why a this causes some but not other The found depend on Recognition Peronospora Parasitica RPP1 )‐like disease...
Polyploidy is a key driver of significant evolutionary changes in plant species. The genus Actinidia (kiwifruit) exhibits multiple ploidy levels, which contribute to novel fruit traits, high yields and resistance the canker-causing dieback disease incited by Pseudomonas syringae pv. actinidiae (Psa) biovar 3. However, genetic mechanism for Psa observed polyploid kiwifruit not yet known. In this study we performed detailed analysis tetraploid chinensis var. population derived from cross...
DATA REPORT article Front. Genet., 16 May 2022Sec. Plant Genomics https://doi.org/10.3389/fgene.2022.852161
The signal that initiates the age-regulated senescence programme in flowers is still unknown. Here we propose for ephemeral Arabidopsis thaliana flower it dies because of continued expression MADS-box transcription factor AGAMOUS (AG). AG necessary specifying reproductive structures flower. Flowers ag-1, which lack AG, exhibited delayed sepal and abscission. also had reduced jasmonic acid (JA) content. Other anther-defective sterile mutants deficient JA, defective anther dehiscence 1 (dad1)...
The infection of Pseudomonas syringae pv. actinidiae in kiwifruit is currently assessed by numerous methodologies, each with their own limitations. Most studies are based on either a laborious method growth quantification the pathogen or qualitative assessments visual scoring following stem cutting inoculation. Additionally, when assessing for resistance against specific effectors, confounding interactions between multiple genes can make mapping phenotypes nearly impossible. Here, we present...
Angiosperm sex chromosomes, where present, are generally recently evolved. The key step in initiating the development of chromosomes from autosomes is establishment a sex-determining locus within region non-recombination. To better understand early chromosome evolution, it important to determine process by which recombination suppressed around determining genes. We have used dioecious angiosperm kiwifruit Actinidia chinensis var. chinensis, has an active-Y system, study rates locus, events...
The skin (exocarp) of fleshy fruit is hugely diverse across species. Most types have a live epidermal covered by layer cuticle made up cutin while few create an outermost dead cells (peridermal layer).In this study we undertook crosses between and peridermal skinned kiwifruit, showed that semi-dominant trait. Furthermore, backcrossing these hybrids to created range phenotypes ranging from fruit, through with varying degrees patches periderm (russeting), complete periderm. Quantitative trait...
Abstract Pseudomonas syringae pv. actinidiae biovar 3 (Psa3) has decimated kiwifruit orchards growing susceptible Actinidia chinensis varieties. Effector loss occurred recently in Psa3 isolates from resistant germplasm, resulting strains capable of partially overcoming resistance present kiwiberry vines ( A. arguta, polygama , and melanandra ). Diploid male recognises several effectors, sharing recognition at least one avirulence effector (HopAW1a) with previously studied tetraploid vines....
ABSTRACT Pseudomonas syringae pv. actinidiae biovar 3 (Psa3) has decimated kiwifruit orchards growing susceptible Actinidia chinensis varieties. Effector loss occurred recently in Psa3 isolates from resistant germplasm, resulting strains capable of partially overcoming resistance present kiwiberry vines ( arguta , polygama and melanandra ). Diploid male A. recognises several effectors, sharing recognition at least one avirulence effector (HopAW1a) with previously studied tetraploid vines....
During analysis of kiwifruit derived from hybrids between the high vitamin C (ascorbic acid; AsA) species Actinidia eriantha and A. chinensis, we observed bimodal segregation fruit AsA concentration suggesting major gene segregation. To test this hypothesis, performed whole-genome sequencing on pools hybrid genotypes with either or low fruit. Pool-GWAS (genome-wide association study) revealed a single Quantitative Trait Locus (QTL) spanning more than 5 Mbp chromosome 26, which denote as...
Strigolactones (SLs), a class of carotenoid-derived hormones, play crucial role in flowering plants by regulating underground communication with symbiotic arbuscular mycorrhizal fungi (AM) and controlling shoot root architecture. While the functions core SL genes have been characterized many plants, their roles non-tracheophyte like liverworts require further investigation. In this study, we employed model liverwort species Marchantia polymorpha, which lacks detectable production orthologs...
Molecular interplay between two species is largely driven by protein–protein interactions and protein modifications that set the pace of co‐evolution in these species. During host–pathogen interactions, proteins involved virulence defence impart tempospatial dynamic post‐translational ( PTM s) to gain advantage for causative Pathogens mainly cause disease plant hosts secreting elicitors (peptides small molecules) or inter‐ intracellular space host cells. These pathogen have evolved a wide...
Most Rubus species have a biennial cycle of flowering and fruiting with an intervening period winter dormancy, in common many perennial fruit crops. Annual-fruiting (AF) varieties raspberry (Rubus idaeus occidentalis L.) blackberry subgenus Rubus) are able to flower one growing season, without the dormant normally required biennial-fruiting (BF) varieties. We used red (R. idaeus) population segregating for AF obtained from cross between NC493 'Chilliwack' identify genetic factors controlling...
Abstract Commercially grown kiwifruit (genus Actinidia) are generally of two sub-species which have a base haploid genome 29 chromosomes. The yellow-fleshed Actinidia chinensis var. chinensis, is either diploid (2n = 2x 58) or tetraploid 4x 116) and the green-fleshed cultivar A. deliciosa “Hayward,” hexaploid 6x 174). Advances in breeding green could be greatly sped up by use molecular resources for more efficient faster selection, example using marker-assisted selection (MAS). key genetic...
Cysteine is required for the synthesis of proteins and metabolites, therefore an indispensable compound growth development. The β-substituting alanine synthase (BSAS) gene family encodes enzymes known as O-acetylserine thiol lyases (OASTLs), which carry out cysteine biosynthesis in plants. functions BSAS isoforms have been reported to be crucial assimilation S biosynthesis, homeostasis In this review we explore functional variation classic pyridoxal-phosphate-dependent enzyme isoforms. We...
DATA REPORT article Front. Genet., 13 April 2021 | https://doi.org/10.3389/fgene.2021.617772