Comparative studies on physiological and biochemical adaptation of Taxodium distichum and Taxodium ascendens seedlings to different soil water regimes

Li, Changxiao; Zhong, Zhang; Geng, Ying; Schneider, Rebecca L.

doi:10.1007/s11104-009-0174-z

Cited by 30 publications

(27 citation statements)

References 65 publications

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“…Our results are not unprecedented because an early TLC study with Eucalyptus siberiana reported concentrations of shikimic acid from 1 to 6.5% of dry mass (Hillis 1959) and concentrations greater than 1% of dry mass have been reported from a variety of gymnosperms (Hattori et al 1954;Li et al 2010), Illicium verum (Liu et al 2009) and Illicium anisatum (Urakami et al 2010). Hence, super-abundant shikimic acid is comparatively common yet we do not know the functional significance of large amounts of shikimic acid.…”

Section: Leaf Metabolite Profiles: Differences Between Speciesmentioning

confidence: 56%

Metabolomics demonstrates divergent responses of two Eucalyptus species to water stress

2011

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Past studies of water stress in Eucalyptus spp. generally highlighted the role of fewer than five "important" metabolites, whereas recent metabolomic studies on other genera have shown tens of compounds are affected. There are currently no metabolite profiling data for responses of stress-tolerant species to water stress. We used GC-MS metabolite profiling to examine the response of leaf metabolites to a long (2 month) and severe (^Ppredawn < -2 MPa) water stress in two species of the perennial tree genus Eucalyptus (the mesic Eucalyptus pauciflora and the semi-arid Eucalyptus dumosa). Polar metabolites in leaves were analysed by GC-MS and inorganic ions by capillary electrophoresis. Pressure-volume curves and metabolite measurements showed that water stress led to more negative osmotic potential and increased total osmotically active solutes in leaves of both species. Water stress affected around 3(MK)% of measured metabolites in E. dumosa and 10-15% in E. pauciflora. There were many metabolites that were affected in E. dumosa but

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Section: Leaf Metabolite Profiles: Differences Between Speciesmentioning

confidence: 56%

Metabolomics demonstrates divergent responses of two Eucalyptus species to water stress

2011

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“…The high clay content of BS surface soils and our anecdotal observations of root content at depth in the field suggest it is unlikely that BS trees developed very deep (>1 m) root systems in the post-dam era. It is possible, however, that a reduction in flooded conditions increased lateral root development (Li et al 2010), which may be aiding in water uptake during dry years. The LE sites have a clay layer deeper in the profile (1-2 m), with a silty/sandy A horizon; the potential for deeper root development in the postdam era is therefore higher at LE sites.…”

Section: Discussionmentioning

confidence: 99%

Changes in Diameter Growth of Taxodium distichum in Response to Flow Alterations in the Savannah River

Palta

Doyle²,

Jackson

et al. 2011

Wetlands

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Efforts to maximize or restore ecological function on floodplains impacted by dam construction have increasingly focused on river flow management. Few studies, however, consider floodplain hydrogeomorphic position and annual climatic variation in dam impact assessment. The Savannah River, a large river ecosystem in the Southeastern United States, was impounded in the 1950's. Our study objectives were: (1) Characterize hydrology in floodplain areas containing Taxodium distichum, and determine how it has been affected by dam operations; (2) Identify basal area increment (BAI) response of Taxodium to annual flooding and climate (dry, average, wet) conditions; (3) Assess BAI response to dam-induced hydrologic changes. Levee and backswamp sites were significantly drier in the post-dam era, and trees at these sites showed a significant post-dam increase in BAI. Lowelevation river sites did not show significant hydrologic differences between pre-and post-dam eras, but BAI was significantly higher in dry years and significantly less sensitive to hydroperiod in the post-dam era. All trees demonstrated a significant quadratic BAI vs. hydroperiod relationship. This study demonstrates that annual productivity of Taxodium trees can be reduced by either drought or flood stress. It also suggests that climate and hydrogeomorphic location mediate dam impacts and productivity-flooding relationships in Taxodium.

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“…Mean annual precipitation is 1200 mm and relative humidity is 80%. The soil type of the site is purple soil [Regosols in Food and Agriculture Organization (FAO) Taxonomy or Entisols in United States Department of Agriculture (USDA) Taxonomy) [19].…”

Section: Research Site Descriptionmentioning

confidence: 99%

“…Therefore, evaluation of plants for flood tolerance is needed for vegetation restoration of the hydro-fluctuation zone of the TGDR region [17]. In former studies, many suitable plants were selected through experiments that simulated flooding [18][19][20]. However, the simulated growth condition of these studies differed from the actual situation of the TGDR [5], especially in submergence depth and duration.…”

Section: Introductionmentioning

confidence: 99%

Growth and Physiological Adaptation of Salix matsudana Koidz. to Periodic Submergence in the Hydro-Fluctuation Zone of the Three Gorges Dam Reservoir of China

Wang

Xie

et al. 2017

Forests

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Submergence-tolerant trees are essential for vegetation restoration of the hydro-fluctuation zone of the Three Gorges Dam Reservoir (TGDR) area. Thus, it is of great significance to select the submergence-tolerant plant species by conducting in situ studies. To restore degraded riparian vegetation under the circumstances of dynamic impoundment of the TGDR, Salix matsudana Koidz., a flooding-tolerant native tree species, was introduced to conduct an in situ practical study to test its performance in re-vegetating and restoring the hydro-fluctuation zone of the TGDR. Effects of periodic moderate submergence (MS) and deep submergence (DS) on photosynthesis and growth of Salix matsudana Koidz. were investigated after three water cycles compared to a control (i.e., shallow submergence, abbreviated as SS) in order to specifically assess its application prospects in vegetation restoration under such extreme environment. Results showed that net photosynthetic rate (P n ), intrinsic water use efficiency (WUEi) and limiting value of stomata (Ls) of S. matsudana were significantly reduced in DS. However, pigment content had no significant change in all submergence treatments. Diameter at breast height (DBH) and tree height of S. matsudana were significantly decreased in both MS and DS when compared to that of SS, respectively. In contrast, the primary branch number of S. matsudana was significantly increased as submergence increased. In addition, relative diameter and height growth rates of S. matsudana were also reduced under submergence. Considering the sustained growth of this species, S. matsudana saplings are tolerant to long-term periodic submergence and can be applied to the vegetative restoration of the hydro-fluctuation zone of the TGDR region.

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Comparative studies on physiological and biochemical adaptation of Taxodium distichum and Taxodium ascendens seedlings to different soil water regimes

Abstract: Responses of baldcypress (Taxodium distichum) and pondcypress (Taxodium ascendens) seedlings in leaf gas exchange and root metabolism to a wide range of hydrological regimes were studied.

Cited by 30 publications

References 65 publications

Metabolomics demonstrates divergent responses of two Eucalyptus species to water stress

Metabolomics demonstrates divergent responses of two Eucalyptus species to water stress

Changes in Diameter Growth of Taxodium distichum in Response to Flow Alterations in the Savannah River

Growth and Physiological Adaptation of Salix matsudana Koidz. to Periodic Submergence in the Hydro-Fluctuation Zone of the Three Gorges Dam Reservoir of China

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