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This research was funded by Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA) grant number RTA2015-00054-C02-01. Research of D.S.K. is supported by a DOC INIA-CCAA contract co-funded by INIA and European Social Fund (ESF).

Analysis of institutional authors

Gil Pelegrín, EustaquioAuthorSancho Knapik, DomingoAuthorPeguero Pina, Jose JavierAuthor

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August 4, 2021
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Cavitation Limits the Recovery of Gas Exchange after Severe Drought Stress in Holm Oak (Quercus ilex L.)

Publicated to:Forests. 9 (8): 443- - 2018-08-01 9(8), DOI: 10.3390/f9080443

Authors: Javier Peguero-Pina, Jose; Mendoza-Herrer, Oscar; Gil-Pelegrin, Eustaquio; Sancho-Knapik, Domingo

Affiliations

Gobierno Aragon, Ctr Invest & Tecnol Agroalimentaria Aragon, Unidad Recursos Forestales, Avda Montanana 930, Zaragoza 50059, Spain - Author

Abstract

Holm oak (Quercus ilex L.) is a Mediterranean species that can withstand intense summer drought through a high resistance to cavitation far beyond the stomatal closure. Besides stomatal limitations, both mesophyll and biochemical limitations to CO2 uptake could increase in holm oak under drought. However, no studies have addressed how hydraulic and non-hydraulic factors may limit the recovery of photosynthesis when re-watering after inducing 50% loss of hydraulic conductivity. We measured photosynthetic traits, xylem embolism, and abscisic acid (ABA) in holm oak with increasing levels of drought stress and seven days after plant re-watering. Drought stress caused a sharp decrease in net CO2 assimilation (A(N)), stomatal and mesophyll conductance (g(s) and g(m)), and maximum velocity of carboxylation (V-cmax). The stomatal closure could be mediated by the rapid increase found in ABA. The high level of xylem embolism explained the strong down-regulation of g(s) even after re-watering. Therefore, only a partial recovery of A(N) was observed, in spite of non-hydraulic factors not limiting the recovery of A(N), because i/ABA strongly decreased after re-watering, and ii/g(m) and V-cmax recovered their original values. Therefore, the hydraulic-stomatal limitation model would be involved in the partial recovery of A(N), in order to prevent extensive xylem embolism under subsequent drought events that could compromise holm oak survival.

Keywords

Abscisic acidCo2DroughtEmbolismHolm oakHydraulic conductivityLeafLimitationsMaximum velocity of carboxylationMechanismsMesophyll conductanceMesophyll diffusion conductancePhotosynthesisPhotosynthetic performancePinus-sylvestris l.RecoveryStomatal conductanceStomatal sensitivityXylem embolism

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Forests due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2018, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Forestry.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.84. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 1.48 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 4.43 (source consulted: Dimensions Sep 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-09-16, the following number of citations:

  • WoS: 30
  • Scopus: 31
  • Google Scholar: 34

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-09-16:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 52.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 52 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 9.35.
  • The number of mentions on the social network X (formerly Twitter): 18 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Peguero-Pina, JJ) and Last Author (Sancho-Knapik, D).

the author responsible for correspondence tasks has been Gil-Pelegrin, E.