Effects of limited water supply on metabolite composition in tomato fruits (Solanum lycopersicum L.) in two soils with different nutrient conditions

Abstract

Effect of water supply to metabolites in tomato fruit was compared in two soils with different nutrient conditions, i.e., either limited or excess. Two types of soil nutrient condition, type A: nutrient-limited and type B: nutrient-excess, were prepared as follows; type A is a low nutrient-containing soil without a replenishment of starved nitrogen and phosphorous, type B is a high nutrient-containing soil exceeding the recommended fertilization. Soil water was adjusted either at −30 kPa (sufficient) or −80 kPa (limited). For harvested tomato fruits, we examined primary and secondary metabolites using non-targeted mass spectrometry based metabolomics. The fruit production and leaf SPAD were greatly dependent on soil nutrient levels, by contrast, the level of lycopene remained unchanged by different levels of water and nutrient supply. The perturbation of metabolites by water supply was clear in the nutrient-excess soil. In particular, limited water supply strongly decreased primary metabolites including sugars and amino acids. We demonstrated that water stress differently shifted primary metabolites of tomato fruits in two soils with different nutrient conditions via non-targeted mass spectrometry-based metabolomics. In conclusion, we suggest that the limited water supply in soils with surplus nutrient is not a recommendable way for tomato ‘cv. Super Dotaerang’ production if fruit nutritional quality such as sugars and amino acids is in the consideration, although there was no disadvantage in fruit yield.

Tomato Response Evaluation through Fertilization and PGRs Application under Temperature Differentiation in Late Winter

“…In the present observation, fluctuating as well as unstable temperature and humidity conditions during the late winter might have obstacle the efficient nutrient uptake by the tomato plants to response differently against varied levels of fertilization because plant performs negatively to any sorts of stresses. In addition, Kim et al [41] and Loudari et al [42] investigated that physiological functions, stomatal opening and hormonal regulations all get disrupted in imbalance weather conditions which restrict the nutrient uptake, plant growth and development as noted here with tomato.…”

Effects of Comparative Metabolism on Tomato Fruit Quality under Different Levels of Root Restriction

“…Many previous studies reported that reducing irrigation amount was favorable for the accumulation of lycopene in tomato fruits (Kim et al 2022;Mitchell et al 1991). Water stress can occur almost every day because of the smaller amount of available water under root-zone restriction.…”

A Comparative Analysis of XGBoost and Neural Network Models for Predicting Some Tomato Fruit Quality Traits from Environmental and Meteorological Data

“…In contrast, the ‘TotPrecip’ feature’s association with the a/b ratio may be indicative of the dilution effect of precipitation on fruit colour concentration, a finding that was supported by the work of Oh et al [ 109 ], who noted that water availability could lead to the dilution of phytochemicals in fruits. Additionally, precipitation can modulate physiological processes in plants, impacting the synthesis and accumulation of pigments responsible for colour, which in turn affected the a/b ratio as was supported in [ 110 ]. The ANN model’s predominantly negative SHAP values and the accompanying negative R² score present a stark contrast to the XGBoost model and raise questions about ANN’s suitability for this task.…”