Researchers develop a cold-resistant tomato variety without compromising plant growth

Researchers Develop Cold-Resistant Tomato Variety Without Compromising Growth

A new study published in Plant Physiology reveals a promising method to create more resilient, cold-tolerant tomato plants (Solanum lycopersicum), without hindering their growth.

Key Findings on Cold Tolerance Mechanism

The research shows that increasing glycosylated sterol levels in tomatoes strengthens cell membranes and triggers hormonal signaling pathways that boost cold resistance. Genetically modified tomatoes respond faster to cold stress by enhancing antioxidant enzyme activity, activating genes linked to abiotic stress defense, and promoting polyamine biosynthesis.

Research Leadership and Impact

The study was led by Professors Albert Ferrer and Teresa Altabella from the University of Barcelona’s Faculty of Pharmacy and Food Sciences and the Centre for Research in Agricultural Genomics (CRAG). This approach offers a new biotechnological path for cultivating cold-hardy tomato varieties.

Challenges Due to Tomato's Tropical Origins

Tomatoes, originally tropical plants, are sensitive to low temperatures ranging from 0 to 12°C, which poses limitations on tomato production in colder climates.

"The strategy described in the study does not negatively affect plant growth, opening new biotechnological avenues for developing more cold-resistant tomato varieties."

Edited by Gaby Clark and reviewed by Robert Egan through Science X's editorial process, the study’s credibility is well established.

Summary

Enhancing glycosylated sterol levels in tomatoes improves cold tolerance by stabilizing membranes and activating defense pathways, enabling growth in colder environments without impacting plant development.

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Phys.org Phys.org — 2025-11-04

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