Genome-Wide Identification and Expression Profiling of ATP-Binding Cassette (ABC) Transporter Gene Family in Pineapple ( (L.) Merr.) Reveal the Role of in Pollen Development.

Pineapple (.) cultivation commonly relies on asexual reproduction which is easily impeded by many factors in agriculture production. Sexual reproduction might be a novel approach to improve the pineapple planting. However, genes controlling pineapple sexual reproduction are still remain elusive. In different organisms a conserved superfamily proteins known as ATP binding cassette (ABC) participate in various biological processes. Whereas, till today the gene family has not been identified in pineapple. Here 100 genes were identified in the pineapple genome and grouped into eight subfamilies (5 , 20 s, 16 , 2 , one , 5 , 42 and 9 ). Gene expression profiling revealed the dynamic expression pattern of gene family in various tissues and different developmental stages. , , , , and exhibited preferential expression in ovule and stamen. Over-expression of in the double mutant partially restored its pollen abortion defects, indicating that plays important roles in pollen development. Our study on gene family in pineapple provides useful information for developing sexual pineapple plantation which could be utilized to improve pineapple agricultural production.