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Article|03 Dec 2020|OPEN
Meta-analysis of the effects of 1-methylcyclopropene (1-MCP) treatment on climacteric fruit ripening
Jing Zhang1, Yuanchun Ma1, Chao Dong1,2, Leon A. Terry3, Christopher B. Watkins4, Zhifang Yu5 & Zong-Ming Max Cheng1,6,
1College of Horticulture, Nanjing Agricultural University, Nanjing, China
2Present address: Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
3Plant Science Laboratory, Cranfield University, Bedfordshire, UK
4School of Integrative of Plant Science, College of Agriculture and Plant Sciences, Cornell University, Ithaca, NY, USA
5College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
6Department of Plant Sciences, University of Tennessee, Knoxville, TN 37996, USA

Horticulture Research 7,
Article number: 208 (2020)
doi: 10.1038/hortres.2020.208
Views: 511

Received: 10 Jun 2020
Revised: 19 Aug 2020
Accepted: 23 Aug 2020
Published online: 03 Dec 2020

Abstract

1-Methylcyclopropene (1-MCP) is an inhibitor of ethylene perception that is widely used to maintain the quality of several climacteric fruits during storage. A large body of literature now exists on the effects of 1-MCP on climacteric fruit ripening for different species and environmental conditions, presenting an opportunity to use meta-analysis to systematically dissect these effects. We classified 44 ripening indicators of climacteric fruits into five categories: physiology and biochemistry, quality, enzyme activity, color, and volatiles. Meta-analysis showed that 1-MCP treatment reduced 20 of the 44 indicators by a minimum of 22% and increased 6 indicators by at least 20%. These effects were associated with positive effects on delaying ripening and maintaining quality. Of the seven moderating variables, species, 1-MCP concentration, storage temperature and time had substantial impacts on the responses of fruit to 1-MCP treatment. Fruits from different species varied in their responses to 1-MCP, with the most pronounced responses observed in rosaceous fruits, especially apple, European pear fruits, and tropical fruits. The effect of gaseous 1-MCP was optimal at 1 μl/l, with a treatment time of 12–24 h, when the storage temperature was 0 °C for temperate fruits or 20 °C for tropical fruits, and when the shelf temperature was 20 °C, reflecting the majority of experimental approaches. These findings will help improve the efficacy of 1-MCP application during the storage of climacteric fruits, reduce fruit quality losses and increase commercial value.