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Genome-Wide Identification and Expression Profiling of the PDI Gene Family Reveals Their Probable Involvement in Abiotic Stress Tolerance in Tomato (Solanum Lycopersicum L.).


ABSTRACT: Protein disulfide isomerases (PDI) and PDI-like proteins catalyze the formation and isomerization of protein disulfide bonds in the endoplasmic reticulum and prevent the buildup of misfolded proteins under abiotic stress conditions. In the present study, we conducted the first comprehensive genome-wide exploration of the PDI gene family in tomato (Solanum lycopersicum L.). We identified 19 tomato PDI genes that were unevenly distributed on 8 of the 12 tomato chromosomes, with segmental duplications detected for 3 paralogous gene pairs. Expression profiling of the PDI genes revealed that most of them were differentially expressed across different organs and developmental stages of the fruit. Furthermore, most of the PDI genes were highly induced by heat, salt, and abscisic acid (ABA) treatments, while relatively few of the genes were induced by cold and nutrient and water deficit (NWD) stresses. The predominant expression of SlPDI1-1, SlPDI1-3, SlPDI1-4, SlPDI2-1, SlPDI4-1, and SlPDI5-1 in response to abiotic stress and ABA treatment suggested they play regulatory roles in abiotic stress tolerance in tomato in an ABA-dependent manner. Our results provide new insight into the structure and function of PDI genes and will be helpful for the selection of candidate genes involved in fruit development and abiotic stress tolerance in tomato.

SUBMITTER: Wai AH 

PROVIDER: S-EPMC7824348 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Genome-Wide Identification and Expression Profiling of the <i>PDI</i> Gene Family Reveals Their Probable Involvement in Abiotic Stress Tolerance in Tomato (<i>Solanum Lycopersicum</i> L.).

Wai Antt Htet AH   Waseem Muhammad M   Khan A B M Mahbub Morshed ABMMM   Nath Ujjal Kumar UK   Lee Do-Jin DJ   Kim Sang-Tae ST   Kim Chang-Kil CK   Chung Mi-Young MY  

Genes 20201225 1


Protein disulfide isomerases (PDI) and PDI-like proteins catalyze the formation and isomerization of protein disulfide bonds in the endoplasmic reticulum and prevent the buildup of misfolded proteins under abiotic stress conditions. In the present study, we conducted the first comprehensive genome-wide exploration of the <i>PDI</i> gene family in tomato (<i>Solanum lycopersicum</i> L.). We identified 19 tomato <i>PDI</i> genes that were unevenly distributed on 8 of the 12 tomato chromosomes, wit  ...[more]

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