Starch branching enzymes as putative determinants of postharvest quality in horticultural crops

Yu，Jingwei1,2,3; Wang，Keyun1; Beckles，Diane M.1

2021-12-01

10.1186/s12870-021-03253-6

BMC PLANT BIOLOGY   影响因子和分区

1471-2229

1471-2229

Starch branching enzymes (SBEs) are key determinants of the structure and amount of the starch in plant organs, and as such, they have the capacity to influence plant growth, developmental, and fitness processes, and in addition, the industrial end-use of starch. However, little is known about the role of SBEs in determining starch structure-function relations in economically important horticultural crops such as fruit and leafy greens, many of which accumulate starch transiently. Further, a full understanding of the biological function of these types of starches is lacking. Because of this gap in knowledge, this minireview aims to provide an overview of SBEs in horticultural crops, to investigate the potential role of starch in determining postharvest quality. A systematic examination of SBE sequences in 43 diverse horticultural species, identified SBE1, 2 and 3 isoforms in all species examined except apple, olive, and Brassicaceae, which lacked SBE1, but had a duplicated SBE2. Among our findings after a comprehensive and critical review of published data, was that as apple, banana, and tomato fruits ripens, the ratio of the highly digestible amylopectin component of starch increases relative to the more digestion-resistant amylose fraction, with parallel increases in SBE2 transcription, fruit sugar content, and decreases in starch. It is tempting to speculate that during the ripening of these fruit when starch degradation occurs, there are rearrangements made to the structure of starch possibly via branching enzymes to increase starch digestibility to sugars. We propose that based on the known action of SBEs, and these observations, SBEs may affect produce quality, and shelf-life directly through starch accumulation, and indirectly, by altering sugar availability. Further studies where SBE activity is fine-tuned in these crops, can enrich our understanding of the role of starch across species and may improve horticulture postharvest quality.

Horticultural crops Postharvest quality Postharvest shelf-life Starch branching enzyme

SCI

英语

其他

USDA Hatch Project[CA-D-PLS-2404-H]

Plant Sciences

Plant Sciences

WOS:000709800400001

BMC

PLANT & ANIMAL SCIENCE

2-s2.0-85117561954

Scopus

1.Department of Plant Sciences,University of California,Davis,One Shields Avenue,95616,United States
2.Graduate Group of Horticulture & Agronomy,University of California,Davis,95616,United States
3.Present Address: Institute of Plant and Food Science,Department of Biology,School of Life Sciences,Southern University of Science and Technology,Shenzhen,518055,China

Yu，Jingwei,Wang，Keyun,Beckles，Diane M.. Starch branching enzymes as putative determinants of postharvest quality in horticultural crops[J]. BMC PLANT BIOLOGY,2021,21(1).

Yu，Jingwei,Wang，Keyun,&Beckles，Diane M..(2021).Starch branching enzymes as putative determinants of postharvest quality in horticultural crops.BMC PLANT BIOLOGY,21(1).

Yu，Jingwei,et al."Starch branching enzymes as putative determinants of postharvest quality in horticultural crops".BMC PLANT BIOLOGY 21.1(2021).