Physiological drought resistance mechanisms in wild species vs. rootstocks of almond and plum

Gerbi, Hadas; Paudel, Indira; Zisovich, Annat; Sapir, Gal; Ben‐Dor, Shifra; Klein, Tamir

doi:10.1007/s00468-021-02238-0

Cited by 7 publications

(4 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cedrus libani is, depending on the references, shade‐intolerant to mid‐shade‐tolerant and drought‐intolerant to moderately drought‐tolerant (Niinemets & Valladares, 2006; Kint et al, 2014). Spartium junceum , Prunus ursina and Sorbus torminalis are light‐demanding pioneer species in degraded sites or in pre‐forest transitory phases of cedar forests (Drapier, 1993; Seytre et al, 1995; Niinemets & Valladares, 2006; Gerbi et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Forest canopy and mistletoe infestation alter the facilitative effects of Juniperus oxycedrus s.l. on woody seedlings on Mount Lebanon (Lebanon)

Douaihy

Maamary

Yammine

et al. 2022

J Vegetation Science

View full text Add to dashboard Cite

Questions:In this study we investigated the direct effect of the shrub Juniperus oxycedrus s.l. on Mediterranean woody species regeneration, and how this interaction can be modified by the juniper habit, the forest canopy and/or infestation of the juniper by the plant parasite Arceuthobium oxycedri. We also aimed at identifying species response groups in relation to their ecological requirements and successional strategies.Location: North of Mount Lebanon, in Horsch Ehden natural reserve, a humid montane Mediterranean forest. Methods:We compared the regeneration of all occurring woody species below and outside 111 Juniperus oxycedrus canopies using the random pair sampling method. We calculated eight relative interaction intensity indexes (RII Juniper ) corresponding to the eight treatment combinations of the three factors: forest canopy (forest/gap), mistletoe infestation (with/without) and juniper habit (spreading/erect). We analyzed the RII values at three different levels: community (all species grouped), species group and species.Results: Overall, the regeneration of the woody community was facilitated by Juniperus oxycedrus. However, the forest cover significantly reduced the facilitative effect of Juniperus oxycedrus when the latter was not infested by Arceuthobium oxycedri. We identified three species response groups (A: highly facilitated; B: slightly facilitated to neutral; and C: neutral) determined by their response to both Juniperus oxycedrus canopy and forest cover. The most facilitated species were shade-tolerant/ drought-intolerant late-successional species. Conclusions:The results suggest the importance of shade tolerance in the complex mechanism of forest regeneration that is also affected by a parasite plant (Arceuthobium oxycedri), which boosts regeneration dynamics under forest cover by reducing shrub canopy cover.

show abstract

Section: Discussionmentioning

confidence: 99%

Forest canopy and mistletoe infestation alter the facilitative effects of Juniperus oxycedrus s.l. on woody seedlings on Mount Lebanon (Lebanon)

Douaihy

Maamary

Yammine

et al. 2022

J Vegetation Science

View full text Add to dashboard Cite

show abstract

“…The vulnerability curve we show in Figure 6 represents an "empiric" curve, meaning it is constructed from Ψ x and PLA values that were measured simultaneously on naturally dehydrating intact plants rather than cut branches, similar to what was done in Paudel et al (2020) and Gerbi et al (2022). The P 50 (i.e., the Ψ x in which 50% of the xylem is embolized) was similar (<0.5 MPa difference) to the P 50 that was found for multiple populations of Aleppo pine from Israel (David-Schwartz et al, 2016), France (Davi et al, 2020), or Spain (Morcillo et al, 2022) using the Cavitron, meaning that the fast method (Cavitron) provides functional data that is relevant for naturally dehydrating trees.…”

Section: Empiric Vulnerability Curvementioning

confidence: 99%

Relationships between xylem embolism and tree functioning during drought, recovery, and recurring drought in Aleppo pine

Wagner,

Volkov,

Nadal‐Sala

et al. 2023

Physiologia Plantarum

Self Cite

View full text Add to dashboard Cite

Recent findings suggest that trees can survive high levels of drought‐induced xylem embolism. In many cases, the embolism is irreversible and, therefore, can potentially affect post‐drought recovery and tree function under recurring droughts. We examined the development of embolism in potted Aleppo pines, a common species in hot, dry Mediterranean habitats. We asked (1) how post‐drought recovery is affected by different levels of embolism and (2) what consequences this drought‐induced damage has under a recurring drought scenario. Young trees were dehydrated to target water potential (Ψx) values of −3.5, −5.2 and −9.5 MPa (which corresponded to ~6%, ~41% and ~76% embolism), and recovery of the surviving trees was measured over an 8‐months period (i.e., embolism, leaf gas‐exchange, Ψx). An additional group of trees was exposed to Ψx of −6.0 MPa, either with or without preceding drought (Ψx of −5.2 MPa) to test the effect of hydraulic damage during repeated drought. Trees that reached −9.5 MPa died, but none from the other groups. Embolism levels in dying trees were on average 76% of conductive xylem and no tree was dying below 62% embolism. Stomatal recovery was negatively proportional to the level of hydraulic damage sustained during drought, for at least a month after drought relief. Trees that experienced drought for the second time took longer to reach fatal Ψx levels than first‐time dehydrating trees. Decreased stomatal conductance following drought can be seen as “drought legacy,” impeding recovery of tree functioning, but also as a safety mechanism during a consecutive drought.

show abstract

“…The hydraulic characteristics of the fruits, which is the final target in fruit tree orchards, have not attracted so much interest as stem or leaf hydraulics. In fruits, both xylem (inflows) and phloem (outflow) fluxes play a major role in their growth rate depending on their developmental stage (Matthews & Shackel, 2005; Clearwater et al ., 2012), the irrigation regime (Torres‐Ruiz et al ., 2016b), irradiance (Boini et al ., 2019) or rootstock‐scion combinations (Gerbi et al ., 2022; Narandžić & Ljubojević, 2022). Understanding the growth strategies of the fruits according to their hydraulic characteristics (i.e.…”

Section: Hydraulic Properties and Crop Productivity Under Drought Con...mentioning

confidence: 99%

Plant hydraulics at the heart of plant, crops and ecosystem functions in the face of climate change

Torres‐Ruiz,

Cochard,

Delzon

et al. 2023

New Phytologist

View full text Add to dashboard Cite

SummaryPlant hydraulics is crucial for assessing the plants' capacity to extract and transport water from the soil up to their aerial organs. Along with their capacity to exchange water between plant compartments and regulate evaporation, hydraulic properties determine plant water relations, water status and susceptibility to pathogen attacks. Consequently, any variation in the hydraulic characteristics of plants is likely to significantly impact various mechanisms and processes related to plant growth, survival and production, as well as the risk of biotic attacks and forest fire behaviour. However, the integration of hydraulic traits into disciplines such as plant pathology, entomology, fire ecology or agriculture can be significantly improved. This review examines how plant hydraulics can provide new insights into our understanding of these processes, including modelling processes of vegetation dynamics, illuminating numerous perspectives for assessing the consequences of climate change on forest and agronomic systems, and addressing unanswered questions across multiple areas of knowledge.

show abstract

Physiological drought resistance mechanisms in wild species vs. rootstocks of almond and plum

Cited by 7 publications

References 53 publications

Forest canopy and mistletoe infestation alter the facilitative effects of Juniperus oxycedrus s.l. on woody seedlings on Mount Lebanon (Lebanon)

Forest canopy and mistletoe infestation alter the facilitative effects of Juniperus oxycedrus s.l. on woody seedlings on Mount Lebanon (Lebanon)

Relationships between xylem embolism and tree functioning during drought, recovery, and recurring drought in Aleppo pine

Plant hydraulics at the heart of plant, crops and ecosystem functions in the face of climate change

Contact Info

Product

Resources

About