A5080195613- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Postharvest Quality and Shelf Life Management
- Plant nutrient uptake and metabolism
- Plant Reproductive Biology
- Plant Gene Expression Analysis
- Polysaccharides and Plant Cell Walls
- Fermentation and Sensory Analysis
- Plant responses to water stress
- Plant and animal studies
- Plant biochemistry and biosynthesis
- Botanical Research and Applications
- Banana Cultivation and Research
- Microbial Metabolites in Food Biotechnology
- Plant Micronutrient Interactions and Effects
- Potato Plant Research
- Antioxidant Activity and Oxidative Stress
- Plant Water Relations and Carbon Dynamics
- Insect behavior and control techniques
- Plant Molecular Biology Research
- Plant Virus Research Studies
- Coastal and Marine Dynamics
- Aluminum toxicity and tolerance in plants and animals
- Food Chemistry and Fat Analysis
- Flowering Plant Growth and Cultivation
Plant & Food Research
2014-2024
AgResearch
1991-2021
Abstract Background Kiwifruit (Actinidia spp.) are a relatively new, but economically important crop grown in many different parts of the world. Commercial success is driven by development new cultivars with novel consumer traits including flavor, appearance, healthful components and convenience. To increase our understanding genetic diversity gene-based control these key Actinidia, we have produced collection 132,577 expressed sequence tags (ESTs). Results The ESTs were derived mainly from...
Tomato, melon, grape, peach, and strawberry primarily accumulate soluble sugars during fruit development. In contrast, kiwifruit (Actinidia Lindl. spp.) banana store a large amount of starch that is released as only after the has reached maturity. By integrating metabolites measured by gas chromatography–mass spectrometry, enzyme activities robot-based platform, transcript data sets development Actinidia deliciosa genotypes contrasting in concentration size, this study identified metabolic...
Abstract Background With the advent of high throughput genomic tools, it is now possible to undertake detailed molecular studies individual species outside traditional model organisms. Combined with a good understanding physiological processes, these tools allow researchers explore natural diversity, giving better biological mechanisms. Here study fruit development from anthesis through senescence presented for non-model organism, kiwifruit, Actinidia chinensis ('Hort16A'). Results...
Abstract Kiwifruit vines are perennial plants grown in climates varying from maritime to continental. To determine key responses temperature, were heated at different stages of fruit development, and vine growth composition examined. Heating during starch accumulation caused a major shift partitioning towards vegetative dramatically reduced carbohydrate vitamin C. In the following season, flowering severely reduced. cell division had minimal long‐term effects, whereas heating maturation...
Apple dwarfing rootstocks cause earlier shoot termination and reduced root mass. To identify physiological factors responsible for rootstock-induced growth restriction, we compared vascular-enriched gene expression between two ('M27' 'M9') the vigorous rootstock 'M793' using RNA sequencing quantitative reverse transcriptase PCR. Differentially expressed genes common to both belonged five main biological processes: (1) primary metabolism, (2) cell wall synthesis modification, (3) secondary...
The elevation of anthocyanin contents in fruits and vegetables is a breeding target for many crops. In some fruit, such as tomato, higher concentrations enhance storage shelf life. contrast, highly anthocyanic red-fleshed apples (Malus x domestica) have an increased incidence internal browning flesh disorder (IBFD). To determine the mechanisms underlying this, 'Royal Gala' cultivar over-expressing anthocyanin-related transcription factor (TF) MYB10 (35S:MYB10), which produces fruit with...
Abstract Kiwifruit ( Actinidia spp.) is a recently domesticated fruit crop with several novel‐coloured cultivars being developed. Achieving uniform flesh pigmentation in red genotypes challenging. To investigate the cause of colour variation between fruits, we focused on red‐fleshed chinensis var. genotype. It was hypothesized that carbohydrate supply could be responsible for this variation. Early development, imposed high or low (carbon starvation) supplies treatments; import redistribution...
Four-year-old kiwifruit vines ( Actinidia deliciosa (A. Chev.) C. F. Liang et A. R. Ferguson var. cv. Hayward) were studied to determine response of the plant and effects on fruit quality when irrigation water was withheld either early or late in growing season. The greatest effect growth occurred Harvest weight from early-stressed approx. 25% less than control vines. Early season stress resulted a transient increase concentrations soluble carbohydrates both leaves fruit. This accompanied by...
Following cell division, fruit growth is characterized by both expansion through increases in volume and biomass accumulation cells. Fruit limited carbon starvation; however, the mechanism controlling under restricted carbohydrate supply poorly understood. In a previous study using red-fleshed kiwifruit, we showed that long-term starvation had detrimental effects on carbohydrate, anthocyanin metabolism, growth. To elucidate mechanisms underlying reduction during kiwifruit development,...
To characterize seasonal patterns of carbohydrate concentrations in Actinidia species from different natural habitats, leaf, fruit and fine root tissue samples five ( A. arguta , deliciosa chinensis polygama eriantha ) were collected over one season, analysed for fructose, glucose, sucrose, myo -inositol starch concentrations. Sucrose peaked leaf around flowering time. In fruit, hexose sugars and/or transiently increased early development. Starch accumulated all species, beginning sooner...
Diurnal changes in carbohydrates leaves, phloem exudate and within fruitwere determined apple trees grown under high, low or no crop load. Inleaves, diurnal patterns of carbohydrate concentrations were most distinct inhigh-cropping least so non-cropping trees. In exudate,sorbitol comprised about 65–70% sugars sucrose30–35%, with clear the amounts. Phloemexudates from stalks sun shade fruit similar. Fruit carbohydratesshowed little variation. Crude extracts showed differencein...
The accumulation of starch by various components 6-year-old kiwifruit vines (Actinidia deliciosa var dehciosa cv Hayward) was recorded over one season Twenty were harvested periodically throughout the year and separated into perennial (fibrous roots, structural stump, stem, cordon, laterals) current season's growth (shoots, leaves, fruit) concentration in fibrous roots followed a sinusoidal trend Minimum concentrations occurred 98 d after budbreak, while maximum 182 later Corresponding times...
Kiwifruit are novel in that they contain high levels of quinic acid (1–2% w/w), which contributes to the flavour, sugar/acid balance and health-giving properties fruit. In a study storage metabolism three kiwifruit species (Actinidia chinensis Planch. var. chinensis, Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson arguta (Sieb. Zucc.) ex Miq. arguta) accumulation occurred principally early stages (<60 days after anthesis; (DAA)) fruit development. The present established there...
Buds, and resultant shoots, were collected from kiwifruit (Actinidia deliciosa [A. Chev.] CF Liang et AR Ferguson var cv Hayward) vines late autumn until spring with without hydrogen cyanamide treatment. Those samples weighed analyzed for total nitrogen free amino acids. By 7 days after treatment, the amount of proline had risen to nearly one-quarter acid pool in treated buds that proportion was maintained at least 14 before it declined. The maximum concentration detected 25.8 micromoles per...
This study identifies the developmental processes contributing to variation in green-fleshed kiwifruit (Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson var. deliciosa) fruit dry matter content (DM) and fresh weight (FW) by comparing genotypes with either high or low final DM. Results are compared model for development, tomato (Solanum lycopersicum L.). Differences composition were attributable a higher rate of starch accumulation from 70 days after anthesis DM genotypes, no other...