Regulation of photosynthesis and stomatal and mesophyll conductance under water stress and recovery in olive trees: correlation with gene expression of carbonic anhydrase and aquaporins

Perez-Martin, Alfonso; Michelazzo, C.; Torres‐Ruiz, José M.; Flexas, Jaume; Fernández, J.E.; Sebastiani, L.; Díaz-Espejo, Antonio

doi:10.1093/jxb/eru160

Cited by 178 publications

(118 citation statements)

References 100 publications

(169 reference statements)

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“…However, at the beginning of this period, values of « st recovered quicker than those of gas exchange related variables. This is also typical in olive , Perez-Martin et al, 2014. The FI trees showed values of « st , g s , A N and E close to the maximum for olive trees under non-limiting conditions (DiazEspejo et al, 2006), all along the experimental period.…”

Section: Meteorological Conditions Irrigation Events and Physiologicsupporting

confidence: 59%

Assessing plant water status in a hedgerow olive orchard from thermography at plant level

García-Tejero

Hernández

Padilla‐Díaz

et al. 2017

Agricultural Water Management

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a b s t r a c tWater scarcity is the most limiting factor in many irrigated areas of Mediterranean countries such as South Spain. Olive growing has been traditionally associated to rain-fed agriculture, although irrigation and practices related to intensive agriculture have been progressively introduced, requiring a more precise irrigation scheduling to save water. Thermal imaging is among the alternatives to assess the crop water status, especially when deficit irrigation (DI) strategies are applied. However, this technique requires of new advances to be more user friendly and robust for practical usage. The aims of this study were: i) to define threshold values of canopy temperature (T C ), Crop Water Stress Index (CWSI) and the temperature difference between canopy and the surrounding air ( T canopy-air ) for the assessment of the olive water status when a DI strategy is applied; ii) to define the best time of the day and the best area of the canopy to carry out thermal measurements, and iii) to obtain relationships between thermal indicators and main physiological parameters useful to estimate the crop water status from thermal data. The trial was conducted during 2015, in a hedgerow olive orchard (SW Spain) with 8-year-old trees (Olea europaea L., cv. Arbequina), under three irrigation regimes: a full-irrigation treatment (FI) and two regulated deficit irrigation treatments aimed to supplying 45% of the irrigation needs. In one of them, irrigation was scheduled from leaf turgor pressure related measurements (45RDI TP ). In the other, the crop coefficient approach was used to schedule irrigation (45RDI CC ). Significant correlations between Tc versus stem water potential (« st ) and leaf gas-exchange parameters (stomatal conductance to water vapour, g s ; net CO 2 assimilation, A N ; transpiration, E) were obtained (p ≤ 0.05), in particular from measurements taken at 10:30 GMT in the lower part of the sunlit side of the canopy. Moreover, the relationships between both T canopy-air and CWSI with the monitored physiological variables were very robust. We concluded that values of T canopy-air higher than 0 • C and values of CWSI up to 0.2 reliably reflect the plant water stress. Our results, therefore, suggest that both T canopy-air and CWSI measured at midday provide reliable information on the tree water status and are useful to schedule irrigation in hedgerow olive orchards, especially under DI conditions.

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Section: Meteorological Conditions Irrigation Events and Physiologicsupporting

confidence: 59%

Assessing plant water status in a hedgerow olive orchard from thermography at plant level

García-Tejero

Hernández

Padilla‐Díaz

et al. 2017

Agricultural Water Management

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“…Bruno et al (2009) isolated a geranylgeranyl reductase (OeCHLP) gene and hypothesised its role in organ development and responses to abiotic and biotic stresses in relation to tocopherol activity. Recently, Perez-Martin et al (2014) carried out an experiment of short-term waterstress and recovery in olive, measuring the changes in leaf gas exchange, chlorophyll fluorescence and plant water status and evaluating correlations with the expression levels of three genes: two aquaporins (OePIP1.1 and OePIP2.1) and one stromal carbonic anhydrase. Based on their results, both aquaporins and carbonic anhydrase are involved in the regulation of stomatal (g s ) and mesophyll conductance (g m ).…”

Section: Functional Genomicsmentioning

confidence: 99%

Recent developments in olive (Olea europaea L.) genetics and genomics: applications in taxonomy, varietal identification, traceability and breeding

Sebastiani

Busconi

2017

Plant Cell Rep

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The latest results in DNA markers application and genomic studies in olive. Olive (Olea europaea L.) is among the most ancient tree crops worldwide and the source of oil beneficial for human health. Despite this, few data on olive genetics are available in comparison with other cultivated plant species. Molecular information is mainly linked to molecular markers and their application to the study of DNA variation in the Olea europaea complex. In terms of genomic research, efforts have been made in sequencing, heralding the era of olive genomic. The present paper represents an update of a previous review work published in this journal in 2011. The review is again mainly focused on DNA markers, whose application still constitutes a relevant percentage of the most recently published researches. Since the olive genomic era has recently started, the latest results in this field are also being discussed.

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“…Thus, drought-induced stomatal closure could inhibit photosynthesis. Net photosynthetic rate (P n (µmol m 2 ·s −1 )), and stomatal conductance (G s (mmol m 2 s −1 )) were employed as direct evaluation indexes [15]. Two important parameters of photosynthesis, G s and P n , for the three plants are displayed in Figure 2.…”

Section: Photosynthesis Of Plant Leaves Under Drought Stressmentioning

confidence: 99%

“…The resulting CO 2 and H 2 O are used in photosynthesis. Additionally, in the guard cells of plant leaves, CA effectively regulates gas exchange between plants and the atmosphere [11,[13][14][15]. Both lower plants and higher plants, CA has been attracting attention in the biomass field.…”

Section: Introductionmentioning

confidence: 99%

“…In response to drought stress, karst-adapted plants close stomata and these plants use the bicarbonate in limestone soils as an alternative inorganic carbon source to maintain continuous photosynthesis [15,21]. To distinguish between atmospheric CO 2 and exogenous bicarbonate sources of carbon, a stable carbon isotope technique was successfully used to trace the metabolism of inorganic carbon sources during photosynthesis [22].…”

Section: Introductionmentioning

confidence: 99%

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Biomass Production of Three Biofuel Energy Plants’ Use of a New Carbon Resource by Carbonic Anhydrase in Simulated Karst Soils: Mechanism and Capacity

Wang

Xing

et al. 2017

Energies

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Abstract:To determine whether the bicarbonate in karst limestone soil could be used as a new carbon resource for biomass production by the catalysis of carbonic anhydrase (CA), a simulative karst drought stress experiment was designed and performed. Three plants used for biofuel energy,, and Euphorbia lathyris L. (El), were grown under simulated karst drought stress. In response to drought stress, the photosynthesis of the three energy plants was inhibited, but their CA activity increased. The hypothesis was confirmed by plant physiological and stable isotope techniques. The obtained results showed that plant biomass was produced with atmospheric CO 2 as well as bicarbonate under drought stress. Bicarbonate use was proportional to the CA activity of the plants. With high CA activity over a long period, El had the highest proportional bicarbonate use compared to Ov and Bj, reaching 26.95%. Additionally, a new method is proposed for the screening of plants grown for energy in karst habitats.

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Regulation of photosynthesis and stomatal and mesophyll conductance under water stress and recovery in olive trees: correlation with gene expression of carbonic anhydrase and aquaporins

Abstract: SummaryIn plants with sclerophyll leaves, the response of stomatal and mesophyll conductance to CO2 to water stress and recovery is correlated with the expression of aquaporins and carbonic anhydrase.

Cited by 178 publications

References 100 publications

Assessing plant water status in a hedgerow olive orchard from thermography at plant level

Assessing plant water status in a hedgerow olive orchard from thermography at plant level

Recent developments in olive (Olea europaea L.) genetics and genomics: applications in taxonomy, varietal identification, traceability and breeding

Biomass Production of Three Biofuel Energy Plants’ Use of a New Carbon Resource by Carbonic Anhydrase in Simulated Karst Soils: Mechanism and Capacity

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