Heat stress in rocket
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ABSTRACT:
PROVIDER: PRJEB88138 | ENA |
REPOSITORIES: ENA
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Project description:Effects of heat priming applied to the first generation on tolerance of the successive generation to post-anthesis high temperature stress were investigated. Compared with the progeny of non-heat primed plants (NH), the progeny of heat-primed plants (PH) presented higher grain yield, leaf photosynthesis and activities of antioxidant enzymes and lower cell membrane damage under high temperature stress. In the transcriptome profile, 1430 probes showed obvious difference in expression between PH and NH. These genes were those of signal transduction, transcription, energy, defense, and protein destination and storage, respectively.
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2022-06-06 | PXD030912 | Pride
Project description:This was an accompanying experiment. Previously, the expression of genes hsp70A and hsp70B had been established as being tetrapyrrole-dependent (Kropat et al., 1997, 2000). Since both are well-known heat-shock proteins, we performed a one-step heat shock treatment by shifting the temperatures from 23M-BM-0C to 42M-BM-0C for 45 min. Moreover, this experiment served as an additional global control to further test the reliability of the microarray and our general conditions since the heat shock response in general is quite well investigated. 3988 responding genes were identified. Among them are 22 genes known to be regulated by HS, selected examples are: the heat shock proteins 22A, 22B and 22C, here leading the list of top-regulated genes on place 1 with a FC of 91297 (22A), place 3 with a FC of 45023 (22B) and place 5 with a FC of 6570 (22C). Other examples are several DnaJ-like proteins or the ClpB chaperone, from the Hsp100 family. In total the analysis comprises 8 samples. For heat shock, a 20 ml culture with ~4 M-CM-^W 106 cells per ml in a 100 ml Erlenmeyer flask was incubated at 42M-BM-0C for 45 min in the light with shaking. Control cultures were incubated in the light at 23M-BM-0C (von Gromoff et al., 1989; Kropat et al., 2000). For harvest, cultures were chilled immediately by pouring them onto crushed ice, centrifuged (5 min, 3000 g, 4M-BM-0C) and resuspended in 1 ml TAP. This procedure was repeated three times, resulting in 3 biological replicates.
2011-03-02 | E-GEOD-20859 | biostudies-arrayexpress
Project description:Heat stress is one of the major abiotic stress factor that affects wheat yield. Especially, heat stress during grain filling affects grain yield besides reduced grain quality. So, in our present study, three genotypes with varied levels of tolerance to heat stress were chosen. They were subjected to heat stress at two stages for three days viz., early (11-14days-post-anthesis) and late (27-30dpa) grain filling independently under controlled conditions. At 14 and 30dpa, the spikes were harvested from control and stress conditions from all the three genotypes, grains were isolated and pulverized. Hence pulverized tissues are used for RNA extraction and further for transcriptome sequencing using HiSeq 4000. Data were analyzed to identify the genes involved in imparting heat stress tolerance.
2019-12-16 | E-MTAB-6140 | biostudies-arrayexpress
Project description:The consequences on tuber transcriptome of a short heat period during tuber development was investigated in this study with special regard to the development of secondary tuber growth. Plants were grown for 47 days in the greenhouse under ambient conditions (21°C/ 19°C, 16h light, 8h dark) before application of mild heat stress temperatures (29°C/27°C) to one group of plants for 7 days and a stress release period on control temperature for 2 more weeks until harvest. Leaves were sampled before the heat period, at the end of the heat period and at harvest, two weeks after stress release. Tuber samples were taken at harvest. Tubers grown at normal temperatures and exhibiting a normal growth phenotype were used as control. Tubers subjected to the heat treatment and exhibiting a second-growth phenotype (chain tubers) were grouped into primary (attached to stolon from plant) and secondary tubers (attached to stolon from primary tuber).
2016-12-12 | E-MTAB-4805 | biostudies-arrayexpress
Project description:Effects of heat priming applied to the first generation on tolerance of the successive generation to post-anthesis high temperature stress were investigated. Compared with the progeny of non-heat primed plants (NH), the progeny of heat-primed plants (PH) presented higher grain yield, leaf photosynthesis and activities of antioxidant enzymes and lower cell membrane damage under high temperature stress. In the transcriptome profile, 1430 probes showed obvious difference in expression between PH and NH. These genes were those of signal transduction, transcription, energy, defense, and protein destination and storage, respectively. Pot experiments (25 cm in diameter and 22 cm in depth) were conducted at the Experimental Station of Nanjing Agricultural University, Nanjing, China (32Ë30ʹN and 118Ë42ʹE). During the first generation, wheat plants were divided into two groups: one group were not primed (N) while the other were heat-primed (P) at pre-anthesis (at a day/night temperature of 32/28ËC for two days at the seven-leaf stage and the nine-leaf stage) and post-anthesis (34/30ËC for seven days at the 10th day after anthesis). At maturity, seeds from both groups were harvested. Seedlings (the progeny generation) from each group seed were further divided two sub-groups: one was subjected to high temperature stress at a day/night temperature of 34/30ËC, while the other was set at 26/22ËC for six days from the 10th day after anthesis (DAA). During both priming and high-temperature stress, plants under different treatments were moved into sepatarate growth chambers at preset temperatures. Thereafter, four treatments were established: NC, progeny of non-primed plants without post-anthesis high temperature stress; NH, progeny of non-primed plants with post-anthesis high temperature stress; PC, progeny of primed plants without post-anthesis high temperature stress; and PH, progeny of primed plants with post-anthesis high temperature stress.
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2020-03-09 | GSE133456 | GEO
Project description:The goal of the current research is to identify factors that involved with heat induced russeting of the potato tuber skin. Potato plants of the variety Desirèe were grown in pots filled with perlite, in a greenhouse under natural winter conditions (Nov 2005- Jan 2006, average temperatures range of 10-18°C). For the exposure of tubers to heat stress (H) hot water (33-35°C) was circulated in tubes lined at the internal side of the pots. The heat was applied one week before tubers harvest. Tubers were harvested at two time points: 8 weeks post sprouting and a week post mechanical vine killing. The skin (S) of young tubers was peeled by hand, as the remaining phelloderm (PH) layers, the periderm of young tubers (P) and the periderm of mature tubers (ST) were peeled using a scalpel blade. Leaves (L) and tuber flesh (TF) samples were collected as well. For each RNA sample 4 biological replicates were prepared; each one represents pooled tissues from 4-6 plants grown at different location in the greenhouse. RNA was extracted using CTAB protocol, and was further purified by RNeasy Mini Kit (Qiagen) using the On-Column DNase Digestion protocol. Keywords: Loop design
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