Divergence of stem biomechanics and hydraulics between<i>Bauhinia</i>lianas and trees

Yan, Xiangwu; Song, Yu; Wu, Fu-Chuan; Zhang, Shubin; Zhang, Jiao‐Lin

doi:10.1093/aobpla/plab016

Cited by 8 publications

(5 citation statements)

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“…Such anatomical trade-offs will determine the xylem functional tradeoffs (Zanne et al, 2010;Crivellaro et al, 2012;Zheng and Martínez-Cabrera, 2013;Janssen et al, 2020;Dória et al, 2022;Zhang et al, 2023a). As an example, K t was negatively related to MOE, also in line with earlier findings (Xiao et al, 2021;Pratt et al, 2021a;Zhang et al, 2022b).…”

Section: Triangular Relationships Among Transport Mechanical Support ...supporting

confidence: 91%

“…Lianas had higher water transport capacity, as indicated by higher vessel area fraction, mean vessel diameter, and theoretical hydraulic conductivity, along with lower mechanical support (lower fiber area fraction, cellulose, wood density, and MOE), supporting our initial hypothesis. This unique vascular design in lianas is well documented in previous studies (Crivellaro et al, 2012; Dias et al, 2019; Mello et al, 2020; Xiao et al, 2021; Zhang et al, 2019, 2021) and suggests that lianas have a lower need for self‐support and greater need for hydraulic conductivity to realize efficient water transport capacity (Crivellaro et al, 2012) and might be an adaptive evolution for rapid growth strategy of lianas (Wang, 1997; Angyalossy et al, 2015). Meanwhile, lianas with less mechanical strength have more flexible stems, making them more resistant to catastrophic fracturing compared to trees (Rowe and Thomas, 2015).…”

Section: Discussionsupporting

confidence: 63%

“…Is the variation in these three functions mainly explained by growth form or site? Previous studies have suggested distinct differences in stem growth between lianas and trees, with lianas decreasing selfsupporting investments while increasing parenchyma and vessel diameters compared with trees (Crivellaro et al, 2012;Angyalossy et al, 2015;Xiao et al, 2021). We therefore hypothesized that lianas would have higher hydraulic conductivity (i.e., vessel area fraction and theoretical hydraulic conductivity) and storage traits (i.e., parenchyma area fraction, NSCs, and tissue water content), but lower values for biomechanical traits (i.e., fiber area fraction, cellulose content, sapwood density, and Young's modulus) than in trees.…”

mentioning

confidence: 99%

“…Previous studies have shown that lianas have a highly specialized vascular system with large vessels to increase water transport capacity and more parenchyma and fewer fibers, thus increasing the wood flexibility (Angyalossy et al, 2015; Morris et al, 2016). Compared with trees, lianas have greater hydraulic conductivity and lower mechanical support capacity (Crivellaro et al, 2012; Xiao et al, 2021). However, Werden et al (2017) found that lianas have smaller vessels than trees in an arid forest.…”

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confidence: 99%

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Linkages among stem xylem transport, biomechanics, and storage in lianas and trees across three contrasting environments

Zhang,

Yang,

Zhang

et al. 2024

American J of Botany

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PremiseStem xylem transports water and nutrients, mechanically supports aboveground tissues, and stores water and nonstructural carbohydrates. These three functions are associated with three types of cells—vessel, fiber, and parenchyma, respectively.MethodsWe measured stem theoretical hydraulic conductivity (Kt), modulus of elasticity (MOE), tissue water content, starch, soluble sugars, cellulose, and xylem anatomical traits in 15 liana and 16 tree species across three contrasting sites in Southwest China.ResultsLianas had higher hydraulic efficiency and tissue water content, but lower MOE and cellulose than trees. Storage traits (starch and soluble sugars) did not significantly differ between lianas and trees, and trait variation was explained mainly by site, highlighting how environment shapes plant storage strategies. Kt was significantly positively correlated with vessel diameter and vessel area fraction in lianas and all species combined. The MOE was significantly positively correlated with fiber area fraction, wood density, and cellulose in lianas and across all species. The tissue water content was significantly associated with parenchyma area fraction in lianas. Support function was strongly linked with transport and storage functions in lianas. In trees, transport and support functions were not correlated, while storage function was tightly linked with transport and support functions.ConclusionsThese findings enhance our understanding of the relationship between stem xylem structure and function in lianas and trees, providing valuable insights into how plants adapt to environmental changes and the distinct ecological strategies employed by lianas and by trees to balance the demands of hydraulic transport, mechanical support, and storage.

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Section: Triangular Relationships Among Transport Mechanical Support ...supporting

confidence: 91%

Section: Discussionsupporting

confidence: 63%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Linkages among stem xylem transport, biomechanics, and storage in lianas and trees across three contrasting environments

Zhang,

Yang,

Zhang

et al. 2024

American J of Botany

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“…1998 , Fan et al. 2017 , Xiao et al. 2021 ), however, others have shown no relationship at all ( Jacobsen et al.…”

Section: Introductionmentioning

confidence: 99%

Trade-offs between xylem hydraulic efficiency and mechanical strength in Chinese evergreen and deciduous savanna species

Zhang

Wen

et al. 2022

Tree Physiology

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Evergreen and deciduous species coexist in tropical dry forests and savannas, but differ in physiological mechanisms and life-history strategies. Hydraulic conductivity and mechanical support are two major functions of the xylems of woody plant species related to plant growth and survival. In the study, we measured sapwood-specific hydraulic conductivity (Ks), leaf-specific hydraulic conductivity (KL), modulus of rupture (MOR) and elasticity (MOE), xylem anatomical traits, and fiber contents in the xylems of 20 woody species with contrasting leaf phenology (evergreen vs. deciduous) in a Chinese savanna. Our results showed that deciduous species had significantly higher Ks and KL but lower MOR and MOE than evergreen species. Evergreen species experienced more negative seasonal minimum water potential (Pmin) than deciduous species during the dry season. Furthermore, we found trade-offs between xylem hydraulic efficiency and mechanical strength across species and within the evergreen and deciduous groups, and these trade-offs were modulated by structural and chemical traits. Both Ks and KL were significantly related to hydraulic weighted vessel diameter (Dh) across all species and within the deciduous group. Both MOR and MOE were significantly related to wood density (WD), neutral detergent fiber (NDF), and acid detergent fiber (ADF) across species and within evergreen and deciduous groups. Our findings demonstrated that Chinese evergreen and deciduous savanna species diverged in xylem hydraulic and mechanical functions, reflecting conservative and acquisitive life-history strategies for evergreen and deciduous species, respectively. This study provides new information to understand the hydraulic and biomechanical properties and ecological strategies of savanna species in long-term dry-hot environments.

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Ecology of Lianas: Diversity and Distribution

Pandi

2023

Taxonomy and Ecology of Climbers: Climbing Plants of India

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Divergence of stem biomechanics and hydraulics betweenBauhinialianas and trees

Cited by 8 publications

References 56 publications

Linkages among stem xylem transport, biomechanics, and storage in lianas and trees across three contrasting environments

Linkages among stem xylem transport, biomechanics, and storage in lianas and trees across three contrasting environments

Trade-offs between xylem hydraulic efficiency and mechanical strength in Chinese evergreen and deciduous savanna species

Ecology of Lianas: Diversity and Distribution

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