A5016274906- Plant nutrient uptake and metabolism
- Plant Micronutrient Interactions and Effects
- Plant Molecular Biology Research
- Plant Stress Responses and Tolerance
- Potato Plant Research
- Legume Nitrogen Fixing Symbiosis
- Aluminum toxicity and tolerance in plants and animals
- Plant and animal studies
- Phosphorus and nutrient management
- Botanical Research and Chemistry
- Nitrogen and Sulfur Effects on Brassica
- Plant Virus Research Studies
- Plant Pathogens and Fungal Diseases
- Plant and fungal interactions
- Irrigation Practices and Water Management
- Plant Disease Resistance and Genetics
- Growth and nutrition in plants
- Plant-Microbe Interactions and Immunity
- Plant responses to water stress
- Plant Parasitism and Resistance
- Plant tissue culture and regeneration
- Rice Cultivation and Yield Improvement
- Agronomic Practices and Intercropping Systems
- Plant Pathogens and Resistance
- Plant Physiology and Cultivation Studies
University of Reading
2016-2025
Southern Cross University
2016-2022
ORCID
2020
Agricultural Research Service
2007-2019
Beltsville Agricultural Research Center
2007-2019
The University of Western Australia
2012-2013
Digital Catapult
2013
University of Nottingham
2004-2012
University of Warwick
2004-2012
James Hutton Institute
2011
Our aim was to generate and prove the concept of "smart" plants monitor plant phosphorus (P) status in Arabidopsis. Smart can be genetically engineered by transformation with a construct containing promoter gene up-regulated specifically P starvation an accessible tissue upstream marker such as beta-glucuronidase (GUS). First, using microarrays, we identified genes whose expression changed more than 2.5-fold shoots growing hydroponically when P, but not N or K, withheld from nutrient...
The environmental and financial costs of using inorganic phosphate fertilizers to maintain crop yield quality are high. Breeding crops that acquire use phosphorus (P) more efficiently could reduce these costs. variation in shoot P concentration (shoot-P) various measures efficiency (PUE) were quantified among 355 Brassica oleracea L. accessions, 74 current commercial cultivars, 90 doubled haploid (DH) mapping lines from a reference genetic population. Accessions grown at two or external...
Summary High soil phosphorus (P) concentration is frequently shown to reduce root colonization by arbuscular mycorrhizal (AM) fungi, but the influence of P on diversity colonizing AM fungi uncertain. We used terminal restriction fragment length polymorphism ( T‐RFLP) 18S rDNA and cloning assess maize Zea mays ), soybean Glycene max ) field violet Viola arvensis at three time points in one season along a gradient 10–280 mg l −1 field. Percentage changed between sampling was not reduced high...
The calcium (Ca) concentration of plant shoot tissues varies systematically between angiosperm orders. phylogenetic variation in the other mineral nutrients has not yet been described at an ordinal level. aims this study were (1) to quantify different orders, (2) partition and within (3) determine if minerals are correlated across species, (4) compare experimental data with published ecological survey on 81 species sampled from their natural habitats. Species, selected pro rata grown a...
Whole-genome transcriptome profiling is revealing how biological systems are regulated at the transcriptional level. This study reports development of a robust method to profile and compare transcriptomes two nonmodel plant species, Thlaspi caerulescens, zinc (Zn) hyperaccumulator, arvense, nonhyperaccumulator, using Affymetrix Arabidopsis thaliana ATH1-121501 GeneChip arrays (Affymetrix, Santa Clara, CA, USA). Transcript abundance was quantified in shoots agar- compost-grown plants both...
Climacteric and non-climacteric fruits have traditionally been viewed as representing two distinct programmes of ripening associated with differential respiration ethylene hormone effects. In climacteric fruits, such tomato banana, the process is marked by increased induced co-ordinated ethylene, while in strawberry grape, it controlled an ethylene-independent little change rate. The contrasting mechanisms, however, both lead to texture, colour, flavour changes that probably reflect some...
Abstract Cesium (Cs) is chemically similar to potassium (K). However, although K an essential element, Cs toxic plants. Two contrasting hypotheses explain toxicity have been proposed: (1) extracellular Cs+ prevents K+ uptake and, thereby, induces starvation; and (2) intracellular interacts with vital K+-binding sites in proteins, either competitively or noncompetitively, impairing their activities. We tested these Arabidopsis (Arabidopsis thaliana). Increasing the concentration agar...
There is concern that modern cultivars and/or agronomic practices have resulted in reduced concentrations of mineral elements essential to human nutrition edible crops. Increased yields are often associated with produce, and a number recent studies indicated that, when grown under identical conditions, the several lower genotypes yielding more grain or shoot biomass than older, lower-yielding genotypes. Potato significant crop, worldwide, yet few investigated whether increasing yields,...
Roots are important to plants for a wide variety of processes, including nutrient and water uptake, anchoring mechanical support, storage functions, as the major interface between plant various biotic abiotic factors in soil environment. Therefore, understanding development architecture roots holds potential manipulation root traits improve productivity sustainability agricultural systems better understand manage natural ecosystems. While lateral is traceable process along primary different...
Zinc (Zn) and cadmium (Cd) hyperaccumulation may have evolved twice in the Brassicaceae, Arabidopsis halleri Noccaea genus. Tandem gene duplication deregulated expression of Zn transporter, HMA4, has previously been linked to Zn/Cd A. halleri. Here, we tested hypothesis that tandem deregulation HMA4 also occurs Noccaea. A caerulescens genomic library was generated, containing 36,864 fosmid pCC1FOS™ clones with insert sizes ∼20–40 kbp, screened a PCR-generated probe. Gene copy number within...
Abstract Bacteroidetes are abundant pathogen-suppressing members of the plant microbiome that contribute prominently to rhizosphere phosphorus mobilisation, a frequent growth-limiting nutrient in this niche. However, genetic traits underpinning their success niche remain largely unknown, particularly regarding acquisition strategies. By combining cultivation, multi-layered omics and biochemical analyses we first discovered all plant-associated express constitutive phosphatase activity,...
The increasing amount of available expressed gene sequence data makes whole-transcriptome analysis certain crop species possible. Potato currently has the second largest number publicly tag (EST) sequences among Solanaceae. Most these ESTs, plus other proprietary sequences, were combined and used to generate a unigene assembly. set 246,182 produced 46,345 unigenes, which design 44K 60-mer oligo array (Potato Oligo Chip Initiative: POCI). In this study, we attempt identify genes controlling...
*Zinc (Zn)-deficient soils constrain rice (Oryza sativa) production and cause Zn malnutrition. The identification of Zn-deficiency-tolerant lines indicates that breeding might overcome these constraints. Here, we seek to identify processes underlying Zn-deficiency tolerance in at the physiological transcriptional levels. *A line RIL46 acquires more efficiently produces biomass than its nontolerant maternal (IR74) low [Zn](ext) under field conditions. We tested if this was result increased...
Calcium (Ca) and magnesium (Mg) are the most abundant group II elements in both plants animals. Genetic variation shoot Ca Mg concentration (shoot Mg) can be exploited to biofortify food crops thereby increase dietary intake for humans livestock. We present a comprehensive analysis of within-species genetic Mg, demonstrating that mineral differs significantly between subtaxa (varietas). established structured diversity foundation set 376 accessions capture high proportion species-wide...
Phosphate (Pi) deficiency in soils is a major limiting factor for crop growth worldwide. Plant under low Pi conditions correlates with root architectural traits and it may therefore be possible to select these improvement. The aim of this study was characterize traits, test quantitative trait loci (QTL) associated (LP) high (HP) availability Brassica napus. Root were characterized seedlings double haploid (DH) mapping population (n = 190) B. napus ['Tapidor' × 'Ningyou 7' (TNDH)] using...