Features and genetic basis of chlorogenic acid formation in diploid potatoes

Huiqin Yang; Qinggang Liao; Ling Ma; Wei Luo; Xiaofeng Xiong; Youwei Luo; Xiong Yang; Chunyong Du; Yufeng He; Xiaolei Li; Dongli Gao; Xiaofeng Xue; Yi Shang

doi:10.1016/j.fochms.2021.100039

Features and genetic basis of chlorogenic acid formation in diploid potatoes

Food Chem (Oxf). 2021 Aug 14:3:100039. doi: 10.1016/j.fochms.2021.100039. eCollection 2021 Dec 30.

Authors

Huiqin Yang¹, Qinggang Liao², Ling Ma¹, Wei Luo¹, Xiaofeng Xiong¹, Youwei Luo³, Xiong Yang⁴, Chunyong Du⁵, Yufeng He⁶, Xiaolei Li⁷, Dongli Gao¹, Xiaofeng Xue⁸, Yi Shang¹

Affiliations

¹ Yunnan Key Laboratory of Potato Biology, The CAAS-YNNU-YINMORE Joint Academy of Potato Sciences, Yunnan Normal University, Kunming 650500, China.
² China Lingnan Guangdong Laboratory of Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518116, China.
³ Center for Agricultural Technology Extension of Dehong State, Mangshi 678400, China.
⁴ Dali Institute of Agricultural Sciences, Dali 671005, China.
⁵ Agricultural Sciences and Technology Extend Station of Liushao Town, Xundian 655200, China.
⁶ Yunnan Lian-Da Science Technology Development Co., Ltd., Yunnan Normal University, Kunming 650500, China.
⁷ Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 652094, China.
⁸ Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China.

Abstract

The concentration of chlorogenic acids (CGAs), is tightly associated with the appearance, taste, and nutrient content of potato tubers. Manipulation of tuber CGA concentrations allows for the breeding of quality traits in potatoes. Currently, a hybrid potato breeding system that aims to convert tetraploid potato into a diploid seed crop represents a new development in potato breeding. Unfortunately, however, a systematic study of CGA formation is very limited in diploid potatoes. Here, using a diverse panel of diploid potatoes, including 40 ancestors and 374 landraces, we analyzed the influence of location, environment, genetic basis, as well as expression of enzymes, in affecting the CGA concentrations in diploid lines. We revealed a selection of the decreased CGA level of tuber flesh in the domestication of diploid potatoes. Moreover, we identified 18 SNPs associated with tuber CGA levels using re-sequenced genome data. This study provides a basis for the breeding of high-quality potato by taking into consideration customer preferences.

Keywords: Chlorogenic acid; Customer preference; Diploid potato; Genome-wide association study.