Ecophysiological and transcriptomic responses of oak (Quercus robur) to long-term drought exposure and rewatering

Spieß, Nadine; Oufir, Mouhssin; Matušíková, Ildikó; Stierschneider, Michael; Kopecky, Dieter; Homolka, Andreas; Burg, K.; Fluch, Silvia; Hausman, Jean-François; Wilhelm, Eva

doi:10.1016/j.envexpbot.2011.11.010

Cited by 85 publications

(69 citation statements)

References 51 publications

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“…On the contrary, oak and sweet chestnut height increments were largely affected by the drought treatment in 2014 and 2015. Their duration of shoot elongation is longer and thus the drought treatment may reduce or delay the number of flushes [69,70] since these species are able to flush several times during a growing season [71]. In 2015 Scots pine shoot length was considerably shorter than in 2014.…”

Section: Effects Of Warming and Drought On Growthmentioning

confidence: 99%

Responses of Contrasting Tree Functional Types to Air Warming and Drought

Martínez-Sancho

Navas

Seidel

et al. 2017

Forests

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Climate change-induced rise of air temperatures and the increase of extreme climatic events, such as droughts, will largely affect plant growth and hydraulics, leading to mortality events all over the globe. In this study, we investigated the growth and hydraulic responses of seedlings of contrasting functional types. Pinus sylvestris, Quercus spp. and Castanea sativa seedlings were grown in a common garden experiment under four treatments: control, air warming, drought and their combination during two consecutive growing periods. Height and diameter increments, stomatal conductance and stem water potentials were measured during both growing seasons. Additionally, hydraulic parameters such as xylem-specific native and maximum hydraulic conductivities, and native percentage of loss of conductivity were measured at the end of the entire experiment. Our results clearly pointed to different adaptive strategies of the studied species. Scots pine displayed a relatively isohydric behavior with a strict stomata control prohibiting native embolism whereas sweet chestnut and oak as relatively anisohydric species displayed an increased loss of native conductivity as a results of low water potentials. Seasonal timing of shoot and diameter growth also differed among functional types influencing drought impacts. Additionally, the possibility of embolism reversal seemed to be limited under the study conditions.

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Section: Effects Of Warming and Drought On Growthmentioning

confidence: 99%

Responses of Contrasting Tree Functional Types to Air Warming and Drought

Martínez-Sancho

Navas

Seidel

et al. 2017

Forests

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“…In P. euphratica, full re-irrigation after water deficit was found to lead to the recovery of most phenotypic traits and the reversal of transcriptional changes (Bogeat-Triboulot et al 2007). In a similar experiment on oak, recovery following re-irrigation occurred in two steps, in which the observed transcriptional remodeling was consistent with physiology and growth (Spiess et al 2012).…”

Section: Abiotic Stressesmentioning

confidence: 79%

Forest tree genomics: 10 achievements from the past 10 years and future prospects

Plomion

Bastien²,

Bogeat‐Triboulot

et al. 2016

Annals of Forest Science

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strategies in terms of conservation and use, as well as climate changes and associated threats. Genomics will undoubtedly play a major role over the next decade and beyond, not only to further understand the mechanisms underlying adaptation and evolution but also to develop and implement innovative management and policy actions to preserve the adaptability of natural forests and intensively managed plantations.

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“…Interestingly, the levels of NAC tf also showed the same trend. Upon re-watering, many genes involved in growth, cell wall modification and lignin biosynthesis are up-regulated in addition to photosynthesis and re-hydration related genes (Zhou et al 2007) while genes involved in stress protection mechanisms such as Early light inducible protein (ELIP) or LEA proteins and in detoxifying systems (thioredoxins) get repressed (Spiess et al 2012). Transcription factors (tfs) for e.g.…”

Section: Discussionmentioning

confidence: 99%

Expression of NAC transcription factor is altered under intermittent drought stress and re-watered conditions in Hevea brasiliensis

et al. 2017

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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.Abstract Drought stress is one of the important factors that restrict the expansion of Hevea brasiliensis cultivation to nontraditional regions experiencing extreme weather conditions. Plants respond to drought stress by triggering expression of several drought responsive genes including transcription factors which in turn trigger expression of various downstream signalling pathways and adaptive networks. Expression of such drought responsive genes may revert back to their original level upon re-watering. However, no reports are available on such phenomenon in Hevea and hence, this study was initiated. For this purpose, NAC transcription factor (NAC tf) was chosen as candidate gene. Its expression levels were monitored under intermittent drought as well as irrigated conditions in two clones (RRII 105 and RRIM 600) of H. brasiliensis with contrasting tolerance level. Copy number of NAC tf was found similar in both the clones. Expression of NAC tf was found highly up-regulated in RRIM 600 (a relatively drought tolerant clone) than in RRII 105 (a relatively drought susceptible clone) throughout the drought incidences which upon re-watering, reached back to its original levels in both the clones. The study indicated the existence of an association between expression of NAC tf and drought tolerance trait exhibited by the tolerant clone RRIM 600. The study also proves the influence of drought and re-watering on the leaf photosynthesis and expression of NAC tf in H. brasiliensis.

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Ecophysiological and transcriptomic responses of oak (Quercus robur) to long-term drought exposure and rewatering

Cited by 85 publications

References 51 publications

Responses of Contrasting Tree Functional Types to Air Warming and Drought

Responses of Contrasting Tree Functional Types to Air Warming and Drought

Forest tree genomics: 10 achievements from the past 10 years and future prospects

Expression of NAC transcription factor is altered under intermittent drought stress and re-watered conditions in Hevea brasiliensis

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