Crassulacean Acid Metabolism 1975-2000, a Check List

Sayed, O. H.

doi:10.1023/a:1020292623960

Cited by 107 publications

(42 citation statements)

References 151 publications

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“…In addition to morphologic and growth habit characteristics, many succulents are ideal for extensive green roofs because they are physiologically adapted to withstand harsh environmental conditions (Gebauer, 1988). Some have been documented to exhibit Crassulacean acid metabolism (CAM), a metabolic pathway that enables them to adapt to water-stressed environmental conditions (Gebauer, 1988;Sayed, 2001;Ting, 1985). CAM plants usually have fewer stomata than C 3 and C 4 plants, and these stomata can open at night for the uptake of CO 2 , thus reducing daytime water loss.…”

mentioning

confidence: 99%

Effect of Substrate Depth on Initial Growth, Coverage, and Survival of 25 Succulent Green Roof Plant Taxa

Durhman¹,

Rowe²,

Rugh³

2007

horts

157

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Because of greater interest in green roofs in the United States, it is critical to increase the number and geographic range of proven plant resources for long-term survival on rooftops. Successful plant taxa for extensive green roofs must establish themselves quickly, provide high groundcover density, and tolerate extreme environmental conditions. Furthermore, dead load weight restrictions on many buildings may limit the substrate depth that can be applied. The objective of this study was to evaluate the effect of substrate depth on initial establishment and survival of 25 succulent plant taxa for green roof applications in the midwestern United States. Survival, initial growth, and rate of coverage were compared for plants grown in three substrate depths (2.5, 5.0, and 7.5 cm) on 24 roof platforms. Plant coverage was determined from image analysis of weekly digital photographs. Results indicate deeper substrates promote greater survival and growth; however, in the shallowest depth of 2.5 cm, several species continued to persist. Of the 25 species initially planted, only 47% survived in the deepest substrate of 7.5 cm. Recommended species at the depths tested for climates similar to southern Michigan include Phedimus spurious Raf. ‘Leningrad White’, Sedum acre L., S. album L. ‘Bella d'Inverno’, S. middendorffianum L., S. reflexum L., S. sediforme J., and S. spurium Bieb. ‘Summer Glory’. Subsidiary species that are present at specific substrate depths but may not exhibit an ability to cover large areas include S. dasyphyllum L. ‘Burnatii’, S. dasyphyllum L. ‘Lilac Mound’, S. diffusum W., S. hispanicum L., and S. kamtschaticum Fisch. The primary deterrent for these subsidiary species was little to no survival at 2.5 cm. Deeper substrates promoted greater survival and growth for nearly all species tested.

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mentioning

confidence: 99%

Effect of Substrate Depth on Initial Growth, Coverage, and Survival of 25 Succulent Green Roof Plant Taxa

Durhman¹,

Rowe²,

Rugh³

2007

horts

157

View full text Add to dashboard Cite

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“…3). This is in accord with its ecophysiological traits, since CAM plants are highly tolerant and adapted to periodic droughts, salinity, or even elevated temperatures 85,86 . In fact, the stomatal opening during night-time instead of daytime offers a lower transpirational water loss 84 , which is a clear evolutionary adaptive advantage of increased water use efficiency and maintenance of considerable internal water reserves.…”

Section: Discussionmentioning

confidence: 59%

Global distribution patterns and niche modelling of the invasive Kalanchoe × houghtonii (Crassulaceae)

Herrando‐Moraira

Vitales

Nualart

et al. 2020

Sci Rep

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Invasive alien species are currently considered one of the main threats to global biodiversity. One of the most rapidly expanding invasive plants in recent times is Kalanchoe × houghtonii (Crassulaceae), an artificial hybrid created in the 1930s in the United States by experimental crossings between K. daigremontiana and K. tubiflora, two species endemic to Madagascar. Thanks to its large colonizing capacity (mainly derived from the production of asexual plantlets), K. × houghtonii soon escaped from cultivation and quickly spread in many parts of the world. However, its actual range is not well known due to the lack of a formal description until recent times (2006) and its strong morphological resemblance with one of its parentals (K. daigremontiana). The present study was aimed, in the first instance, to delimit the present distribution area of K. × houghtonii at the global scale by gathering and validating all its occurrences and to track its colonization history. Currently, K. × houghtonii can be found on all continents except Antarctica, although it did not reach a global distribution until the 2000s. Its potential distribution, estimated with MaxEnt modelling software, is mainly centered in subtropical regions, from 20° to 40° of both northern and southern latitudes, mostly in areas with a high anthropogenic activity. Unexpectedly, concomitant to a poleward migration, future niche models suggest a considerable reduction of its range by up to one-third compared to the present, which might be related with the Crassulaceaean Acid Metabolism (CAM) of K. × houghtonii. Further research may shed light as to whether a decrease in potential habitats constitutes a general pattern for crassulaceae and CAM plants.

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“…This physiological pathway plays a crucial role during drought stress. In addition, several Sedum species are recognized as "inducible CAM" type [12] [13], which are primarily C 3 and C 4 plants with the ability to switch their carbon metabolism to the CAM pathway in response to drought stress [14]. Further, some studies suggested that Sedum species on green roofs exhibit the C 3 photosynthetic pathway [15] [16].…”

Section: Introductionmentioning

confidence: 99%

Relevance of Carbon Sequestration to the Physiological and Morphological Traits of Several Green Roof Plants during the First Year after Construction

Kuronuma¹,

Watanabe²

2017

AJPS

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Different vegetation types used for the extensive green roofs have characteristic physiological and morphological traits (e.g., C 3 , C 4 , or CAM photosynthesis, deciduous or evergreen). Several Sedum species are recognized as "inducible CAM" type plants. These differences in the physiological and morphological traits have a considerable effect on the carbon sequestration in the green roofs. The objective of the present study was to quantify the carbon sequestration in several green roof plants during the first year after the construction of the green roofs and to clarify the relevance of the physiological and morphological traits to each plant's ability to sequester carbon in its body using the growth analysis method. We used Zoysia matrella, Ophiopogon japonicus, and Sedum mexicanum species for the study wherein, S. mexicanum was assigned to the wet, dry, and non-irrigation treatments, and Z. matrella and O. japonicus only received the wet treatment. During the first year after the construction, carbon sequestration in the plants and the substrate of S. mexicanum was in the range of 276 to 364 g-C/m 2 /year, which was similar to that of O. japonicus and the finding of a previous study. In contrast, Z. matrella exhibited the highest carbon sequestration (670 g-C/m 2 /year), which is also expressed as the relative plant C-sequestration rate per whole-plant C-content (RGR c ), because Z. matrella is a C 4 plant and exhibits the highest net assimilation rate (NAR c ) of all species. Significant differences were not observed in RGR c , NAR c , and RMF (root mass fraction) in S. mexicanum between the wet and dry treatments. These results suggest that in countries with high rainfall, a high frequency of irrigation has an insignificant effect on the physiological and morphological characteristics, and carbon sequestration in the Sedum green roofs.

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Crassulacean Acid Metabolism 1975-2000, a Check List

Cited by 107 publications

References 151 publications

Effect of Substrate Depth on Initial Growth, Coverage, and Survival of 25 Succulent Green Roof Plant Taxa

Effect of Substrate Depth on Initial Growth, Coverage, and Survival of 25 Succulent Green Roof Plant Taxa

Global distribution patterns and niche modelling of the invasive Kalanchoe × houghtonii (Crassulaceae)

Relevance of Carbon Sequestration to the Physiological and Morphological Traits of Several Green Roof Plants during the First Year after Construction

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