Dataset Information

Heat-adaptive proteome in filling wheat grain

ABSTRACT: Wheat (T. aestivum L. Chinese Spring) plants were cultured in 25-cm buckets at a density of 16 plants per bucket in a greenhouse at a temperature of 15–30 °C. Plants were watered once a week, and artificial light was applied when there was fewer than 12 h of natural daylight. The flowering date of each spike was recorded when the first flower appeared on the spike. Comparable wheat plants were selected depending on the flowering time and growth status and were transferred into growth chambers 12 DAF for a three-day adaptation period to the growth chamber environment (24/17 °C, 14/10 h day/night cycle). Wheat plants were illuminated with a photosynthetic photon flux density of 360 µmol m˗2 s˗1 at canopy height, and relative humidity ranged from 40% to 70%. Half of the wheat plants (about 50 plants) were transferred to heated conditions (37/17 °C, 14/10 h day/night cycle, 40% to 70% humidity), while the others were maintained under the standard conditions described above as a control. After three day/night cycles, the heated samples were collected after the plants had been exposed to heat for 4 h, and the control samples from the unheated chambers were collected at the same time for and proteomic analyses. A minimum of 20 spikes were collected from each condition, immediately immersed in liquid nitrogen and stored at ˗80 °C until further analysis.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Triticum Aestivum (wheat)

TISSUE(S): Plant Cell, Seed

SUBMITTER: Yunze Lu

LAB HEAD: Shengbao Xu

PROVIDER: PXD010340 | Pride | 2018-08-29

REPOSITORIES: Pride

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Project description:The experiment was carried out during two vegetation seasons from 25th of April to 10th of September. Two Polish potato cultivars, the drought-tolerant Gwiazda and drought-sensitive Oberon were used. Selected tubers with transverse diameters of 3 - 4 cm were pre-sprouted for 2 weeks before planting. Plants were grown in a vegetation hall in pots filled with a thin layer of gravel on the bottom and the universal vegetable soil substrate ‘Hollas’ (Agaris Polska Ltd., Poland) produced from peat with the addition of chalk at a pH range of 5.5-6.5. Additionally, in phase 20 of the BBCH-scale of plant development, MIS-3 (Intermag) fertilizer was applied. Water content (WC) in volumetric basis in soil pots was measured according Black (1965). Weather conditions during the years of study were monitored using a Weather Campbell Station (Campbell Scientific Inc.) located in close proximity, and a thermohygrograph placed between pots. Meteorological data of air temperature, the photosynthetically active radiation, and humidity were comparable in the years of study and favorable for potato development. Three weeks after the initiation of the tuberisation phase (56 DAP), plants were divided into 3 groups, each consisting of 6 plants. The first group of plants was subjected to soil drought (remained without irrigation, day/night temperature 22°C/18°C), the second one to high temperature (day/night temperature 38°C/25°C) and the third one was watered according to needs and at optimal temperature (control plants, day/night temperature 22°C/18°C). Stress application lasted 14 days and finished at 70 DAP. During this period, plants were placed in phytotron equipped with six Hortilux Schreder Lamps with Philips light bulbs of 1600 W each. Air humidity was in the range 65-70%. WC under 14 days of soil drought reached 30% (v/v), and remained 80% (v/v) in control and high temperature conditions. During the recovery period, after 14 days of stress treatment, WC reached control levels. Plant root material for proteomic research was collected on the 14th day of stress treatment (70 DAP).

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Heat-adaptive proteome in filling wheat grain

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