Plant salt-tolerance-related protein AtSDIP1, and coding gene and application thereof

Abstract

The invention discloses a plant salt-tolerance-related protein AtSDIP1, and a coding gene and an application thereof. The protein provided by the invention is the following (a), or (b), or (c): (a) a protein composed of an amino acid sequence represented by the sequence 1 in the sequence table; (b) a protein derived from the sequence 1 and is related to plant salt tolerance, wherein the amino acid sequence of the sequence is subjected to substitution and / or deletion and / or addition of one or more amino acid residues; (c) a protein derived from the sequence 1 and is relates to plant salt tolerance, wherein the protein has at least 50%, at least 60%, at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 90%, at least 95%, at least 98%, or at least 99% homology with the sequence 1. The invention provides a basis for the researches of plant response and tolerability molecular mechanisms against salt stress, and has important significance to crop improvement and salt-tolerant crop cultivation.

Description

technical field [0001] The invention relates to a plant salt tolerance related protein AtSDIP1 and its coding gene and application. Background technique [0002] According to incomplete statistics, at least 20% of the cultivated land and more than 50% of the irrigated land in the world are affected by salt damage to varying degrees. In some arid or semi-arid areas, due to large evaporation and low precipitation, the salt in the soil (mainly NaCl and NaCO 3 ) accumulate in large quantities. In some coastal areas, the groundwater level is high or the seawater intrudes, which will also lead to the accumulation of more salt on the soil surface (mainly NaCl and MgSO 4 ). Unreasonable irrigation methods and long-term freshwater salt washing have caused secondary salinization of a large number of farmlands. With the rapid increase of the world's population, the intensification of urbanization in developing countries, and the sharp decline in the area of ​​irrigable land caused ...

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Problems solved by technology

[0005] The impact of salt stress on plant growth is mainly manifested in the following aspects: first, excessive salinity in the soil reduces the osmotic potential of the soil, which will cause difficulty in absorbing water for plant roots, resulting in water shortage for plants; second, sodium ions, Ion poisoning caused by the accumulation of chloride ions and sulfates, and lead to insufficient intake of potassium, calcium, phosphorus, and nitrogen, resulting in nutrient stress; third, when plants are under salt stress, a large amount of active oxygen will accumulate in the cells, High concentrations of reactive oxygen species can cause damage to membrane lipids, proteins and nucleic acids

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