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6 期 吴虹佳等: 16 种苏铁属植物叶片的水力学特征 1 1 8 3
特征均无显著相关性ꎬ基于 PICs 性状相关性分析 BLACKMAN CJꎬ GLEASON SMꎬ CHANG Yꎬ et al.ꎬ 2014.
发现苏铁属植物水力学性状与结构特征是解耦关 Leaf hydraulic vulnerability to drought is linked to site water
系ꎮ 这与 Li 等(2015) 对中国热带亚热带森林木 availability across a broad range of species and climates
[J]. Annals of Botanyꎬ 114(3): 435-440.
本植物的叶片性状研究发现一致ꎮ 缺乏叶结构-
BLOMBERG SPꎬ GARLAND Tꎬ IVES ARꎬ 2003. Testing for
功能的协同性叶部分解释了为什么苏铁植物叶水
phylogenetic signal in comparative data: Behavioral traits are
力安全性与效率性之间无权衡关系ꎮ 本研究仅发 more labile [J]. Evolutionꎬ 57(4): 717-745.
现栅栏 组 织 厚 度 ( PT) 与 P 显 著 正 相 关 ( P < BOURNE AEꎬ CREEK Dꎬ PETERS JMRꎬ et al.ꎬ 2017. Species
50leaf
0.05)ꎬ即栅栏组织越厚ꎬ植物的抗栓塞能力越强ꎮ climate range influences hydraulic and stomatal traits in
高度发达的栅栏组织既可以避免强烈光照的灼 Eucalyptus species [ J ]. Annals of Botanyꎬ 120(1):
123-133.
伤ꎬ又有助于 CO 等气体从气孔下室到光合作用场
2
BRENNER EDꎬ STEVENSON DWꎬ TWIGG RWꎬ 2003.
所的传导ꎬ从而提高植物对水分匮缺的响应( 胡营
Cycads: Evolutionary innovations and the role of plant ̄
等ꎬ2011)ꎮ derived neurotoxins [J]. Trends in Plant Scienceꎬ 8(9):
446-452.
4 结论 BRODRIBB TJꎬ COCHARD Hꎬ 2009. Hydraulic failure defines
the recovery and point of death in water ̄stressed conifers
[J]. Plant Physiologyꎬ 149(1): 575-584.
本研究发现ꎬ苏铁属植物的抗栓塞能力较弱ꎬ
BRODRIBB TJꎬ HOLBROOK NMꎬ ZWIENIECKI MAꎬ et al.ꎬ
大部分物种的气孔安全边界为负值ꎬ说明在干旱情
2005. Leaf hydraulic capacity in fernsꎬ conifers and
况下气孔关闭较晚ꎬ易发生水力失败的风险ꎮ 由于 angiosperms: Impacts on photosynthetic maxima [ J]. New
苏铁属植物叶片结构-功能解耦ꎬ导致其水力效率 Phytologistꎬ 165(3): 839-846.
和安全性之间不存在权衡关系ꎮ 另外ꎬ本研究还发 BRODRIBB TJꎬ HOLBROOK NMꎬ 2003. Stomatal closure
现分布于喀斯特和非喀斯特生境的苏铁植物叶片 during leaf dehydrationꎬ correlation with other leaf
physiological traits [ J ]. Plant Physiologyꎬ 132(4):
生理结构无显著性差异ꎬ分布在喀斯特生境的苏铁
2166-2173.
植物ꎬ其叶片并没有表现出较耐旱的特征ꎬ在气候
CAINE RSꎬ HARRISON ELꎬ SLOAN Jꎬ et al.ꎬ 2023. The
变化背景下可能更容易遭受干旱致死的风险ꎮ 因 influences of stomatal size and density on rice abiotic stress
此ꎬ需要加强喀斯特生境苏铁植物的水分生理生态 resilience [J]. New Phytologistꎬ 237(6): 2180-2195.
CHEN ZCꎬ LI Sꎬ WAN XCꎬ et al.ꎬ 2022. Strategies of tree
监测ꎬ并针对性地采取水分管理措施ꎮ
species to adapt to drought from leaf stomatal regulation and
stem embolism resistance to root properties [J]. Frontiers in
参考文献: Plant Scienceꎬ 13: 926535.
COIRO Mꎬ ALLIO Rꎬ MAZET Nꎬ et al.ꎬ 2023. Reconciling
ARBICHEVA Aꎬ ANATOLY Pꎬ SALDANA Aꎬ 2021. Water fossils with phylogenies reveals the origin and
storage and transport in leaves of vesselless trees in the macroevolutionary processes explaining the global cycad
temperate rainforest of south ̄central Chile [ J]. Gayana biodiversity [J]. New Phytologistꎬ 240(4): 1616-1635.
Botanicaꎬ 78(2): 141-155. CURTIS TRꎬ MARK CHꎬ KEVIN WEꎬ 2016. ImageJ: Image
BARTLETT MKꎬ KLEIN Tꎬ JANSEN Sꎬ et al.ꎬ 2016. The Analysis Interoperability for the Next Generation of
correlations and sequence of plant stomatalꎬ hydraulicꎬ and Biological Image Data [J]. Microscopy and Microanalysisꎬ
wilting responses to drought [J]. Proceedings of the National 22(S3): 2066-2067.
Academy of Sciencesꎬ 113(46): 13098-13103. FIELD TSꎬ WILSON JPꎬ 2012. Evolutionary voyage of
BARTLETT MKꎬ SCOFFONI Cꎬ SACK Lꎬ 2012. The angiosperm vessel structure ̄function and its significance for
determinants of leaf turgor loss point and prediction of early angiosperm success [J]. International Journal of Plant
drought tolerance of species and biomes: A global meta ̄ Sciencesꎬ 173(6): 596-609.
analysis [J]. Ecology Lettersꎬ 15(5): 393-405. FENG XYꎬ WANG XHꎬ CHIANG YCꎬ et al.ꎬ 2021. Species
BLACKMAN CJꎬ CREEK Dꎬ MAIER Cꎬ et al.ꎬ 2019. Drought delimitation with distinct methods based on molecular data to
response strategies and hydraulic traits contribute to elucidate species boundaries in the Cycas taiwaniana
mechanistic understanding of plant dry ̄down to hydraulic complex (cycadaceae) [J]. Taxonꎬ 70(3): 477-491.
failure [J]. Tree Physiologyꎬ 39(6): 910-924. GLEASON SMꎬ WESTOBY Mꎬ JANSEN Sꎬ et al.ꎬ 2016. Weak

