Journal
BIOLOGIA PLANTARUM
Volume 57, Issue 3, Pages 495-506Publisher
ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s10535-013-0329-x
Keywords
cold sensitivity; coffee genotypes; mineral dynamics; principal component analysis; tolerance markers
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Funding
- FCT [REEQ/374/BIO/2005, PTDC/AGR-AAM/64078/2006]
- European Fund FEDER
- Portuguese PIDDAC
- European Social Fund
- [SFRH/BPD/47563/2008]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/47563/2008, PTDC/AGR-AAM/64078/2006] Funding Source: FCT
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Temperature and mineral nutrition are major environmental factors regulating plant growth and development. Yet, cold impact on mineral contents and the ability of the plants to perform changes in specific elements as a part of the acclimation process received little attention. Using five Coffea genotypes previously characterized concerning their cold sensitivity, a mineral analysis was performed considering macro (N, P, K, Ca, Mg, and S) and micro (Na, Fe, Mn, Zn, Cu, and B) nutrients in order to predict their importance in cold tolerance. The results showed a cold-induced dynamics of mineral nutrients in recently mature leaves. The less cold sensitive Icatu, and partially Catuai, accumulated N, Ca, Mn, Cu, and Zn with potential implications in the maintenance of photosynthetic performance, the reinforcement of the antioxidative defense system, lipid metabolism, and the expression of cold regulated genes, thus constituting interesting traits to evaluate the cold acclimation ability. After a principal component analysis (PCA), N, Fe, Mn, and Cu were further confirmed as strong candidates for an early cold tolerance evaluation due to their dynamics and to specific roles in the activities of Cu/Zn-SOD (Cu), APX (Fe), and PSII (Mn).
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