The effects of localized heating and disbudding on cambial reactivation and formation of earlywood vessels in seedlings of the deciduous ring-porous hardwood, Quercus serrata

Kudo, Kayo; Nabeshima, Eri; Begum, Shahanara; Yamagishi, Yusuke; Nakaba, Satoshi; Oribe, Yuichiro; Yasue, Koh; Funada, Ryo

doi:10.1093/aob/mcu026

Cited by 44 publications

(36 citation statements)

References 31 publications

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“…Cell divisions in the cambial zone started 5–6 wk earlier than the enlargement of the first EV, attaining longer periods between cambial resumption and the onset of vessel differentiation than previous studies for other ring‐porous species (Frankenstein et al ., ; Kudo et al ., ). Budburst was coupled to the beginning of wall thickening in both species, although secondary wall deposition had not been initiated at the moment of budburst for some first formed Qrob vessels.…”

Section: Discussionmentioning

confidence: 97%

Do changes in spring phenology affect earlywood vessels? Perspective from the xylogenesis monitoring of two sympatric ring‐porous oaks

et al. 2015

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SummaryThis study addresses relationships between leaf phenology, xylogenesis, and functional xylem anatomy in two ring-porous oak species, the temperate Quercus robur and the subMediterranean Q. pyrenaica.Earlywood vessel (EV) formation and leaf phenology were monitored in 2012 and 2013. Ten individuals per species were sampled at each of three sites located in NW Iberian Peninsula. EV areas measured on microcore sections were used to calculate the hydraulic tree diameter (D h ), in order to model relationships to phenology. Thermal requirements were evaluated using growing degree days (GDD).A species-specific timing of growth resumption was found. The onset of EV formation and budburst were associated to a particular GDD in each species. The onset and duration of EV enlargement affected D h (and EV size) in Q. robur, but hardly in Q. pyrenaica.The relationship between the timings of EV formation and xylem structure appears to be stronger for the temperate oak, whose larger vessels may result from thermal-induced earlier resumption. In contrast, the sub-Mediterranean oak would maintain a more conservative hydraulic architecture under warming conditions.

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Section: Discussionmentioning

confidence: 97%

Do changes in spring phenology affect earlywood vessels? Perspective from the xylogenesis monitoring of two sympatric ring‐porous oaks

et al. 2015

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“…This could result from divergent cell responses according to the spatial patterns of auxin concentration (Schrader et al 2003). In this regard, Rathgeber, Rossi & Bontemps (2011) reported that xylem differentiation started earlier in dominant Abies alba trees, while Kudo et al (2014) found that disbudding Quercus serrata seedlings reduced the number and size of earlywood vessels, whose formation was also delayed in a few days.…”

Section: A S C U L a R C A M B I U M A N D G R O W T H C A P A C I T Ymentioning

confidence: 99%

Environmental conditions and vascular cambium regulate carbon allocation to xylem growth in deciduous oaks

et al. 2016

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Summary Environmental conditions and the structure of the dormant cambium are assumed to affect seasonal patterns of cambial activity, hence controlling allocation of non‐structural carbohydrates (NSC) to growth. However, seasonal dynamics of xylogenesis, and their connections with NSC content and dormant cambium size, have been rarely assessed along an environmental gradient. We monitored xylogenesis and leaf phenology during 2012 and 2013, and NSC in 2012, for the drought‐sensitive Quercus robur and the drought‐tolerant Quercus pyrenaica along a water‐availability gradient in the north‐western Iberian Peninsula, and analysed dependencies of xylem production and phenology on the number of cells in dormant cambium. Study oak species showed comparable seasonal fluctuations in cambial activity and NSC content, despite Q. pyrenaica had a shorter growing season and a lower wood production than Q. robur. A sharp drop in spring NSC levels at all study sites evidenced that stored carbohydrates were crucial for earlywood formation. Under drier conditions, both species extended the growing period in spring and autumn, but reduced and even stopped xylogenesis in summer, showing an enhanced NSC accumulation before dormancy. A higher number of cells in dormant cambium of large dominant oaks accounted for their wider xylem increments and longer active periods. Our study demonstrates that xylogenesis is modulated by predisposing effects of dormant cambium size on xylem production and growing season length. Moreover, the high plasticity of cambial activity in deciduous oaks would confer resistance against recurrent summer drought through the improvement of the NSC status. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.12789/suppinfo is available for this article.

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“…Several physiological explanations of vessel-temperature interactions have been discussed in other publications (e.g., Aloni 2015;González-González et al 2014;Pritzkow et al 2016). An influence of stem temperature reaching a threshold of 5°C with a delay of 1-2 weeks before cambial activity begins has been reported by Güney et al (2016) in Lebanon cedar and Kudo et al (2014) found that cambial reactivation in the ring-porous hardwood Quercus serrata is triggered mainly by temperature. The detected close relationship of air heat sum seems to initialize cambial activity and earlywood vessel development directly in a positive manner.…”

Section: Temporal Changes Of Vessel Responsementioning

confidence: 80%

A novel computer-aided tree-ring analysis software (CATS): oak earlywood vessel size reveals a clear spring heat sum response

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Wehr

Roelfs

et al. 2017

Trees

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Key message The use of cell-size parameters from oak trees as a powerful proxy for past climate reconstruction needs to be more intensively studied. The freeware tool CATS will help pushing these high-volume cell-size measurements. Abstract In this study, we analyzed the response of vessel size chronologies to daily meteorological records. For this purpose, we developed a computer-aided tree-ring analysis software (CATS) for high-volume cell-size measurements.

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The effects of localized heating and disbudding on cambial reactivation and formation of earlywood vessels in seedlings of the deciduous ring-porous hardwood, Quercus serrata

Cited by 44 publications

References 31 publications

Do changes in spring phenology affect earlywood vessels? Perspective from the xylogenesis monitoring of two sympatric ring‐porous oaks

Do changes in spring phenology affect earlywood vessels? Perspective from the xylogenesis monitoring of two sympatric ring‐porous oaks

Environmental conditions and vascular cambium regulate carbon allocation to xylem growth in deciduous oaks

A novel computer-aided tree-ring analysis software (CATS): oak earlywood vessel size reveals a clear spring heat sum response

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