Divergence in Eco-Physiological Responses to Drought Mirrors the Distinct Distribution of Chamerion angustifolium Cytotypes in the Himalaya–Hengduan Mountains Region

Wen, Guo Chun; Yang, Jie; Sun, Xudong; Chen, Guangjie; Yang, Yongping; Duan, Yuan‐Wen

doi:10.3389/fpls.2016.01329

Cited by 18 publications

(26 citation statements)

References 104 publications

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“…SAMPLE PREPARATION AND FLOW CYTOMETRY STUDY. Investigation of GS was performed in a flow cytometer as described previously (Guo et al, 2016). In brief, young leaves were collected from each turnip seedling and kept on ice until processing, which occurred within one h of sample collection.…”

Section: Methodsmentioning

confidence: 99%

“…For example, researchers who studied large-scale cytotype distribution (McAllister et al, 2015) hypothesized that higher GS plants adapt better in high altitudes than lower GS plants. However, the results of some studies are inconsistent with this hypothesis (Guo et al, 2016). For instance, Bennett et al (1982) indicated that lower GS plants have increased tolerance in highlands.…”

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confidence: 97%

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Variations in Genome Size of Turnip Landraces from Two High-altitude Environments

Basak¹,

Wang²,

Sun³

et al. 2018

J. Amer. Soc. Hort. Sci.

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Brassica rapa var. rapa (turnip) is considered a main source of food for the inhabitants of the Qinghai-Tibetan Plateau (QTP) and its adjacent highlands when other crops are scarce. The QTP ranges from lat. 25.59°N to 39.49°N and from long. 73.29°E to 104.40°E, whereas the Yunnan Plateau ranges from lat. 20.00°N to 29.16°N and from long. 96.00°E to 110.19°E. A comparison between the turnip landraces of two different plateau environments can provide a mechanistic insight into plant adaptation in highlands. The aim of this investigation was to understand the patterns in variation in genome size (GS) between the turnip landraces of two plateau environments. We used a well-established protocol to count chromosome number and performed propidium iodide flow cytometry to measure GS. No polyploidy was detected among the turnip landraces tested, and 15.5% variation in GS was observed between the landraces. No consistent pattern pertaining to GS variation emerged after the environmental variables were considered. Thus, we propose that such pattern may reflect the indirect effect of selection, random process, genetic drift, or some other factors on GS through interaction of life-form and phenotypic traits.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 97%

Variations in Genome Size of Turnip Landraces from Two High-altitude Environments

Basak¹,

Wang²,

Sun³

et al. 2018

J. Amer. Soc. Hort. Sci.

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“…In turn, triploids (n=27) appear in mixed-ploidy populations of border areas [40]. The hexaploid cytotype was reported only in central Japan and the Yunnan province of China [36,41].…”

Section: Distribution and Habitatsmentioning

confidence: 99%

Fireweed (Epilobium angustifolium L.): botany, phytochemistry and traditional uses. A review

et al. 2019

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Fireweed (Epilobium angustifolium L., Onagraceae) is one of important medicinal plants used especially in the treatment of urogenital disorders, including benign prostatic hyperplasia (BPH) and prostatitis. The therapeutic effects of E. angustifolium extracts comprise antiproliferative, anti-inflammatory, immunomodulatory, antioxidant, and also antimicrobial activities. The aim of the present review was to provide the information on the botany, phytochemistry and traditional uses of E. angustifolium. This plant is a widespread circumboreal species of North America and Eurasia, tolerant in terms of habitat conditions, and often occupying man-made open habitats. Phytochemical studies on E. angustifolium resulted in the identification of about 250 different metabolites, including about 170 substances found for the first time in this plant in the last six years (2014)(2015)(2016)(2017)(2018)(2019). Fireweed has an abundance of polyphenolic compounds, particularly ellagitannins. Oenothein B and quercetin-3-O-glucuronide are proposed as markers for the identification and standardization of the plant raw material. E. angustifolium exhibits significant phytochemical variability in relation to the geographical origin, plant part and time of harvest/vegetation phase. Survey of the ethnobotanical literature showed that the above-mentioned species has been widely used not only as a medicinal, but also as an edible, honey and decorative plant. BOTANY TaxonomyEpilobium (Chamerion) angustifolium is classified to the Onagraceae family, which consists of 22 genera and approximately 650 species. The genus Chamerion (Raf.) Raf. ex Holub (syn. Chamaenerion Ség.) with eight species restricted to the northern hemisphere (mainly in Eurasia) belongs to the Onagroideae subfamily and Epilobieae tribe [18]. Relatively often, it is included in Epilobium L., which is the largest genus in the Onagraceae [19][20][21][22]. However, Chamerion clearly differs from Epilobium in terms of flower structure, leaf arrangement and other features [18,[23][24][25]. Molecular data also show that Chamerion is a separate monophyletic group of plants [26][27][28]. SynonymsThe Plant List [22] provides more than 40 synonyms of the species described, with three of these being the most commonly used: Epilobium angustifolium L., Chamerion angustifolium (L.) Holub and Chamaenerion angustifolium (L.) Scop. According to Holub [23], Chamerion should be considered the correct Latin name of this genus, while Chamaenerion is an illegitimate name. On the other hand, Sennikov [25] recently presented arguments for the restoration of the older name Chamaenerion. However, in Recently, the number of publications concerning the above-mentioned species has increased significantly. Screening of the Scopus database with the keywords of 'Epilobium/Chamerion/Chamaenerion angustifolium' found 416 document results, including 80 articles published in the years of 2014-2019. A new detailed summary is required not only for phytochemistry and pharmacology of E. angustifolium, but also in ...

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“…short-term, as well as long-term growth and fitness related plant traits and their mutual interplay should thus be considered to understand the specific mechanisms behind the response. Most of the existing studies exploring differences between cytotypes in response to stress are, however, focused on either physiology and morphology of plants [ 20 , 35 – 40 ] or fitness traits [ 22 , 41 , 42 ]. Only a single study focused on both physiological and fitness traits in the same experiments [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

Physiological and fitness differences between cytotypes vary with stress in a grassland perennial herb

Pavlíková¹,

Holá²,

Vlasáková³

et al. 2017

PLoS ONE

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Background and aimsUnderstanding the consequences of polyploidization is a major step towards assessing the importance of this mode of speciation. Most previous studies comparing different cytotypes, however, did so only within a single environment and considered only one group of traits. To take a step further, we need to explore multiple environments and a wide range of traits. The aim of this study was to assess response of diploid and autotetraploid individuals of Knautia arvensis (Dipsacaceae) to two stress conditions, shade or drought.MethodsWe studied eleven photosynthetic, morphological and fitness parameters of the plants over three years in a common garden under ambient conditions and two types of stress.Key resultsThe results indicate strong differences in performance and physiology between cytotypes in ambient conditions. Interestingly, higher fitness in diploids contrasted with more efficient photosynthesis in tetraploids in ambient conditions. However, stress, especially drought, strongly reduced fitness and disrupted function of the photosystems in both cytotypes reducing the between cytotype differences. The results indicate that drought stress reduced function of the photosynthetic processes in both cytotypes but particularly in tetraploids, while fitness reduction was stronger in diploids.ConclusionsThe photosynthesis related traits show higher plasticity in polyploids as theoretically expected, while the fitness related traits show higher plasticity in diploids especially in response to drought. This suggests that between cytotype comparisons need to consider multiple traits and multiple environments to understand the breath of possible responses of different cytotypes to stress. They also show that integrating results based on different traits is not straightforward and call for better mechanistic understanding of the relationships between species photosynthetic activity and fitness. Still, considering multiple environments and multiple species traits is crucial for understanding the drivers of niche differentiation between cytotypes in future studies.

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Divergence in Eco-Physiological Responses to Drought Mirrors the Distinct Distribution of Chamerion angustifolium Cytotypes in the Himalaya–Hengduan Mountains Region

Cited by 18 publications

References 104 publications

Variations in Genome Size of Turnip Landraces from Two High-altitude Environments

Variations in Genome Size of Turnip Landraces from Two High-altitude Environments

Fireweed (Epilobium angustifolium L.): botany, phytochemistry and traditional uses. A review

Physiological and fitness differences between cytotypes vary with stress in a grassland perennial herb

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