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ABSTRACT:
PROVIDER: PRJNA1294312 | ENA |
REPOSITORIES: ENA
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Project description:Under soil water limitation and with adequate irrigation, we estimated growth measurements of the shoot and root system, as well as photosynthetic and proteomic profiles of two inbred lines of popcorn previously selected for tolerance to soil water limitation - L71, drought-tolerant; and L61, drought-sensitive - in an attempt to identify mechanisms related to tolerance to soil water limitation during the maturation phase. The plants were grown until grain filling in a substrate composed of perlite and peat in a 150 cm long PVC tube, under two water conditions (WC): i) irrigated (WW), at lysimeter capacity (LC - 100%); and ii) water-stressed (WS). The plants in the WS condition gradually reached 45% of the LC and were maintained like this for 10 days. Regardless of WC, L71 had the highest values of dry biomass of the shoot and root system, characterizing it as the most robust genotype. The imposed water limitation induced earlier senescence, degrading chlorophylls, and increasing anthocyanin values, with a more expressive impact in L61. The traits related to gas exchange expressed differences between lines only in the WS condition. In comparing WCs and most of the traits evaluated, the L71 genotype had the smallest proportional reductions. A total of 1,838 proteins were identified, with 169 differentially accumulated proteins (DAPs) in the tolerant line and 386 DAPs in the sensitive line. The pathways of energy metabolism, photosynthesis, oxidative stress response, and protein synthesis represented the main differences between L71 and L61. Therefore, our results provide important insights into the changes in proteomic profiles that occur in adaptation to water limitation in popcorn, providing useful information for breeding towards the expression of genotypic superiority to water deficit.
2025-01-31 | PXD042348 | Pride
Project description:Quinoa is an Andean crop whose cultivation has been extended to many different parts of the world in the last decade. It shows a great capacity for adaptation to diverse climate conditions, including environmental stressors, and moreover, the seeds are very nutritious in part due to their high protein content which is rich in essential amino acids. They also contain good amounts of other nutrients such as unsaturated fatty acids, vitamins, or minerals and are gluten-free seeds. Also, the use of quinoa hydrolysates and peptides has been linked to numerous health benefits. Altogether, these aspects have situated quinoa as a crop able to contribute to food security worldwide. Aiming to deepen our understanding of the protein quality and function of quinoa seeds and how they can vary when this crop is subjected to water-limiting conditions, a shotgun proteomics analysis was performed to obtain the proteomes of quinoa seeds harvested from two different water regimes in field: rainfed and irrigated conditions. Also, a quantitative analysis was developed to determine the total number of proteins identified in both samples, which of them are present in both conditions, and also, which ones were present exclusively in seeds under rainfed or irrigated conditions.
2023-04-04 | PXD038953 | Pride
Project description:A field experiment was conducted at the Federal University of Alagoas in Maceio, Brazil. varieties RB86-7515, RB85-5536 and RB92-579 were distributed in a randomized block design with four replicates in two conditions: irrigated (control) and non-irrigated (treatment).
2021-01-14 | GSE125070 | GEO
Project description:The response to moderate and heavy drought of two Solanum tuberosum ssp. Andigena varieties, Sullu (NP 03.03) and SA 2563 (NP 03.01), planted in rain- and soil water protected fields in the Peruvian highlands are compared. Previous experiments indicate that Sullu has a greater capacity for yield maintenance under drought than SA 2563. Both clones have similar morphological properties, vegetative periods and rooting depths, so it can be assumed that the cause for increased drought tolerance of clone NP 03.03 is rather due to physiological or biochemical mechanisms, than to drought escape by deep rooting or earliness. Sullu and SA 2563 were planted in a random block design with 5 plants per bloc and 7 repetitions per treatment. Treatments: (1) drought stress, (2) irrigated control The plants were drip-irrigated in both treatments until tuberization (until day 84 after planting). Subsequently, the irrigation was stopped in the drought field, but continued in the control field. The soil moisture content in the control field was kept near field capacity. Planting date: October 05 2004 Start of drought treatment (during tuberization, 84 days after planting): December 28 2004 First sampling (soil water potential: -0.3 mPa 114 days after planting): January 27 2005 Second sampling (soil water potential –0.6 MPa, 134 days after planting): February 15 2005 Harvest: March 19 2005 (165 days after planting) The experimental design includes gene expression analysis in leaves, roots and stolons at two time points, when soil water potential reaches -0.3 and –0.6 MPa. Gene expression changes will be set in relation with physiological and agronomical data obtained in the same experiment. Keywords: Direct comparison
2007-09-01 | GSE8243 | GEO
Project description:The response to moderate and heavy drought of two Solanum tuberosum ssp. Andigena varieties, Sullu (NP 03.03) and SA 2563 (NP 03.01), planted in rain- and soil water protected fields in the Peruvian highlands are compared. Previous experiments indicate that Sullu has a greater capacity for yield maintenance under drought than SA 2563. Both clones have similar morphological properties, vegetative periods and rooting depths, so it can be assumed that the cause for increased drought tolerance of clone NP 03.03 is rather due to physiological or biochemical mechanisms, than to drought escape by deep rooting or earliness. Sullu and SA 2563 were planted in a random block design with 5 plants per bloc and 7 repetitions per treatment. Treatments: (1) drought stress, (2) irrigated control The plants were drip-irrigated in both treatments until tuberization (until day 84 after planting). Subsequently, the irrigation was stopped in the drought field, but continued in the control field. The soil moisture content in the control field was kept near field capacity. Planting date: October 05 2004 Start of drought treatment (during tuberization, 84 days after planting): December 28 2004 First sampling (soil water potential: -0.3 mPa 114 days after planting): January 27 2005 Second sampling (soil water potential –0.6 MPa, 134 days after planting): February 15 2005 Harvest: March 19 2005 (165 days after planting) The experimental design includes gene expression analysis in leaves, roots and stolons at two time points, when soil water potential reaches -0.3 and –0.6 MPa. Gene expression changes will be set in relation with physiological and agronomical data obtained in the same experiment. Keywords: Direct comparison 19 hybs total
2007-09-01 | E-GEOD-8243 | biostudies-arrayexpress
Project description:The aim of this study was to evaluate the physiological response and the expression analysis of `Dusa´ avocado rootstocks subjected to two different levels of water stress, and their subsequent recovery. At the beginning of the experiment, avocado plants were divided in Control plants (watered to field capacity (Fc) throughout the experiment) and stressed plants that were subjected to controlled substrate drying-up until they reached 50% of Fc (mild-WS) and 25% of Fc (severe-WS), respectively. Afterwards, plants were fully irrigated to assess drought recovery response. A set of physiological measurement were taken at leaf and whole-plant levels to assess avocado response to each level of water stress and rewatering. Root samples were collected in mild-WS and severe-WS and gene expression analysis was carried out using a targeted cDNA avocado stress microarray containing transcripts from de novo sequencing of 'Dusa' in response to biotic and abiotic stress. Avocado gene expression profiles under different levels of water stress are discussed in order to shed light on the molecular mechanisms associated with water deprivation in Dusa avocado rootstocks.
2021-11-03 | GSE151051 | GEO