School of Agriculture and Biotechnology, Sun Yat-sen University, Shenzhen, 518107, China.
BMC Plant Biol. 2024 Jul 22;24(1):693. doi: 10.1186/s12870-024-05410-z.
Climate change is one of the biggest challenges to the world at present. Tomato is also suffered from devastating yield loss due to climate change. The domesticated tomato (Solanum lycopersicum) is presumed to be originated from the wild tomato (S. pimpinellifolium). In this study, we compared the climate data of S. pimpinellifollium with the domesticated tomato, predicted the suitable regions of S. pimpinellifollium in China using MaxEnt model and assessed their tolerance to drought stress. We found that the predicted suitable regions of wild tomato are highly consistent with the current cultivated regions of domesticated tomato, suggesting that the habitat demand of domesticated tomato descended largely from its ancestor, hence the habitat information of wild tomato could provide a reference for tomato cultivation. We further predicted suitable regions of wild tomato in the future in China. Finally, we found that while average drought tolerance between wild and domesticated tomato accessions shows no difference, tolerance levels among wild tomato accessions exhibit higher variation, which could be used for future breeding to improve drought resistance. To summarize, our study shows that suitable regions of wild tomato provide insights into domesticated tomato cultivation in China.
气候变化是当前世界面临的最大挑战之一。番茄也因气候变化而遭受严重的产量损失。栽培番茄（Solanum lycopersicum）被认为起源于野生番茄（S. pimpinellifolium）。在本研究中，我们比较了 S. pimpinellifollium 和栽培番茄的气候数据，使用 MaxEnt 模型预测了中国野生番茄的适宜区域，并评估了它们对干旱胁迫的耐受能力。我们发现，野生番茄的预测适宜区域与栽培番茄的当前种植区域高度一致，这表明栽培番茄的生境需求在很大程度上来自其祖先，因此野生番茄的生境信息可以为番茄种植提供参考。我们进一步预测了中国未来野生番茄的适宜区域。最后，我们发现虽然野生和栽培番茄品种之间的平均耐旱性没有差异，但野生番茄品种之间的耐受水平表现出更高的变异性，这可以用于未来的培育来提高抗旱性。总之，我们的研究表明，野生番茄的适宜区域为中国的栽培番茄种植提供了新的思路。
