Advances in Mineral Nutrition Transport and Signal Transduction in Rosaceae Fruit Quality and Postharvest Storage.

Qian Bai,Yun Huang,Yuanyue Shen

doi:10.3389/fpls.2021.620018

Abstract

Mineral nutrition, taken up from the soil or foliar sprayed, plays fundamental roles in plant growth and development. Among of at least 14 mineral elements, the macronutrients nitrogen (N), potassium (K), phosphorus (P), and calcium (Ca) and the micronutrient iron (Fe) are essential to Rosaceae fruit yield and quality. Deficiencies in minerals strongly affect metabolism with subsequent impacts on the growth and development of fruit trees. This ultimately affects the yield, nutritional value, and quality of fruit. Especially, the main reason of the postharvest storage loss caused by physiological disorders is the improper proportion of mineral nutrient elements. In recent years, many important mineral transport proteins and their regulatory components are increasingly revealed, which make drastic progress in understanding the molecular mechanisms for mineral nutrition (N, P, K, Ca, and Fe) in various aspects including plant growth, fruit development, quality, nutrition, and postharvest storage. Importantly, many studies have found that mineral nutrition, such as N, P, and Fe, not only affects fruit quality directly but also influences the absorption and the content of other nutrient elements. In this review, we provide insights of the mineral nutrients into their function, transport, signal transduction associated with Rosaceae fruit quality, and postharvest storage at physiological and molecular levels. These studies will contribute to provide theoretical basis to improve fertilizer efficient utilization and fruit industry sustainable development.

Highlights

Many species of Rosaceae are rich in economic value, such as apple, pear, peach, apricot, plum, cherry, loquat, mango, almond, and strawberry
dimethylpyrazole phosphate (DMPP) reduced the capacity of N absorption and N accumulation in fruits and whole apple plant, whereas it increased fruit anthocyanin and soluble solid content (SSC), and it had no significant effect on fruit yield (Wang et al, 2020a)
We focused on the effect of mineral nutrition on Rosaceae species’ fruit yield, quality, and postharvest storage and, on the one hand, on the mechanisms by which Rosaceae absorbed, utilized, and transmitted nutritional signals

Summary

Introduction

Many species of Rosaceae are rich in economic value, such as apple, pear, peach, apricot, plum, cherry, loquat, mango, almond, and strawberry. DMPP reduced the capacity of N absorption and N accumulation in fruits and whole apple plant, whereas it increased fruit anthocyanin and soluble solid content (SSC), and it had no significant effect on fruit yield (Wang et al, 2020a). Overexpressing MdHY5 (transcription factor LONG HYPOCOTYL 5) in apple callus induced the expression of N acquisition-related genes and increased the activity of NR, improving nitrate contents (An et al, 2017).

Results

Conclusion