Clonal integration enhances expansion ability of Ipomoea aquatica in aquatic–terrestrial ecotones

Liu, Lu; Lin, Hui-Feng; Dong, Bi‐Cheng

doi:10.1016/j.aquabot.2015.09.005

Cited by 11 publications

(21 citation statements)

References 38 publications

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“…This result was partly consistent with the first two hypotheses, suggesting that the effect of the stolon connection in peripheral ramets strongly depended upon patch type, and that the maintenance of stolon connection would become a 'win-win' strategy for both young and older ramets in A. philoxeroides fragments that experienced high-nutrient patches. In another work on the amphibious species Ipomoea aquatica, clonal integration also provided similar benefits to both young and older ramets if young ramets experienced an aquatic habitat with high nitrogen concentration (Liu et al 2016). One plausible reason for this is that the increased favorability of the Fig.…”

Section: Discussionmentioning

confidence: 87%

“…In another work on the amphibious species Ipomoea aquatica , clonal integration also provided similar benefits to both young and older ramets if young ramets experienced an aquatic habitat with high nitrogen concentration (Liu et al . ). One plausible reason for this is that the increased favorability of the peripheral habitat could accelerate the development and maturation of young ramets, and thus reduce the costs from clonal integration to older ramets.…”

Section: Discussionmentioning

confidence: 97%

“…Letters show which means differed between patch-type treatments within stolon connection treatments; symbols show which means differed between stolon connection treatments within patch-type treatments; no symbol means P > 0.05; * P = 0.01-0.05; ** P = 0.001-0.01; *** P < 0.001. peripheral habitat could accelerate the development and maturation of young ramets, and thus reduce the costs from clonal integration to older ramets. The other plausible explanation is that young ramets under high-nutrient conditions will have a higher probability of being new donors because they take over the role of older ramets at the late developmental stage, although the initial direction of clonal integration is often acropetal from older to younger ramets (Tomasko & Dawes 1989;Xiao et al 2007;Liu et al 2016).…”

Section: Discussionmentioning

confidence: 99%

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Effects of soil heterogeneity and clonal integration on Alternanthera philoxeroides populations with a radial ramet aggregation

Liu

Dong

2016

Plant Species Biology

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Some clonal plants can spread their ramet populations radially, and soil heterogeneity and clonal integration may greatly affect the establishment of these types of populations. We constructed Alternanthera philoxeroides populations with a radial ramet aggregation, allowing old ramets of clonal fragments to concentrate in central pots and younger ramets to root in peripheral pots. The peripheral pots were supplemented either with three different levels (high, medium and low) of soil nutrients to simulate a heterogeneous soil environment, or only one medium level of soil nutrients to simulate a homogeneous environment. Stolon connections between the central older ramets and the peripheral younger ramets were left intact or severed to test the effect of clonal integration. The maintenance of stolon connection could induce the division of labor between different‐aged ramets, by increasing the root investment in central ramets and the above‐ground growth in peripheral ramets. The maintenance of stolon connection could improve the growth of the central and peripheral ramets, clonal fragments and even the whole population. However, the positive consequence in peripheral ramets and whole fragments was only detected in the high‐nutrient patch of heterogeneous treatment. In sum, in the population with the radial ramet aggregation, clonal integration can play a key role in the rapid recruitment of young ramets of A. philoxeroides fragments, as well as the expansion of the whole population. The magnitude of clonal integration also became more obvious in the peripheral young ramets and whole fragments that experienced high‐nutrient patches.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

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Effects of soil heterogeneity and clonal integration on Alternanthera philoxeroides populations with a radial ramet aggregation

Liu

Dong

2016

Plant Species Biology

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“…; Liu et al . ). The results support our hypothesis and suggest that clonal integration enables P. paspaloides to expand from uncontaminated terrestrial habitats to aquatic habitats that are heavily contaminated with Cd.…”

Section: Discussionmentioning

confidence: 97%

“…; Liu et al . ). Because there were significant benefits to both apical and basal ramets, clonal integration significantly increased growth of the whole clonal fragment.…”

Section: Discussionmentioning

confidence: 97%

Clonal integration facilitates spread of Paspalum paspaloides from terrestrial to cadmium‐contaminated aquatic habitats

et al. 2017

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Cadmium (Cd) is a hazardous environmental pollutant with high toxicity to plants, which has been detected in many wetlands. Clonal integration (resource translocation) between connected ramets of clonal plants can increase their tolerance to stress. We hypothesised that clonal integration facilitates spread of amphibious clonal plants from terrestrial to Cd-contaminated aquatic habitats. The spread of an amphibious grass Paspalum paspaloides was simulated by growing basal older ramets in uncontaminated soil connected (allowing integration) or not connected (preventing integration) to apical younger ramets of the same fragments in Cd-contaminated water. Cd contamination of apical ramets of P. paspaloides markedly decreased growth and photosynthetic capacity of the apical ramets without connection to the basal ramets, but did not decrease these properties with connection. Cd contamination did not affect growth of the basal ramets without connection to the apical ramets, but Cd contamination of 4 and 12 mg·l significantly increased growth with connection. Consequently, clonal integration increased growth of the apical ramets, basal ramets and whole clones when the apical ramets were grown in Cd-contaminated water of 4 and 12 mg·l . Cd was detected in the basal ramets with connection to the apical ramets, suggesting Cd could be translocated due to clonal integration. Clonal integration, most likely through translocation of photosynthates, can support P. paspaloides to spread from terrestrial to Cd-contaminated aquatic habitats. Amphibious clonal plants with a high ability for clonal integration are particularly useful for re-vegetation of degraded aquatic habitats caused by Cd contamination.

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Clonal plant Duchesnea indica Focke forms an effective survival strategy in different degrees of Pb-contaminated environments

et al. 2018

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Clonal integration enhances expansion ability of Ipomoea aquatica in aquatic–terrestrial ecotones

Cited by 11 publications

References 38 publications

Effects of soil heterogeneity and clonal integration on Alternanthera philoxeroides populations with a radial ramet aggregation

Effects of soil heterogeneity and clonal integration on Alternanthera philoxeroides populations with a radial ramet aggregation

Clonal integration facilitates spread of Paspalum paspaloides from terrestrial to cadmium‐contaminated aquatic habitats

Clonal plant Duchesnea indica Focke forms an effective survival strategy in different degrees of Pb-contaminated environments

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