The conservation of Rhododendrons is of greater urgency than has been previously acknowledged in China

Ma, Yongpeng; Nielsen, Jens Kvist; Chamberlain, David F.; Li, Xiaoya; Sun, Weibang

doi:10.1007/s10531-014-0764-9

Cited by 44 publications

(54 citation statements)

References 3 publications

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“…Of particular concern is insufficient capacity to house every rare taxon in a botanical collection (Heywood 2009, Lopez-Pujol et al 2011, Ma et al 2014, indicating that robust processes are needed to identify ex situ conservation priorities.…”

Section: E Gardinermentioning

confidence: 99%

“…Acquiring and organising up-to-date data for a Red List assessment can be difficult in general (Newton & Oldfield 2008, Oldfield 2010, Blackmore et al 2011, Cires et al 2013) and this weakness has been noted in particular for Rhododendron (Ma et al 2014, Rahman & Rozak 2016. Gibbs et al (2011) recognised this issue and noted the need for additional field research that may modify an assessment.…”

Section: Assumptions and Limitationsmentioning

confidence: 99%

“…Gibbs et al (2011) recognised this issue and noted the need for additional field research that may modify an assessment. For example, Ma et al (2014) increased the threat level of two Rhododendron species while Rahman & Rozak (2016) reduced the threat level of two other species on the basis of additional field research. Despite the possible weaknesses in the Rhododendron Red List, conservation planning 'has to start somewhere' and the current Red List is a significant resource that can be used to inform future research.…”

Section: Assumptions and Limitationsmentioning

confidence: 99%

“…Rhododendron taxa of Chinese origin (69 % of taxa Red Listed) are in a worse position than Chinese flora in general, where 20 % are considered at risk . Although China has in place a conservation strategy and a range of in situ and ex situ initiatives (Lopez-Pujol et al 2011, Ma et al 2013, more ex situ collections are needed in general (Raven 2011, and more field work and ex situ collections are needed for Rho dodendron in particular (Ma et al 2013(Ma et al , 2014. Other countries also have in situ conservation initiatives for 'all flora', e.g., Nepal (IUCN Nepal 2010) and India (Rana & Samant 2010), with initiatives that are particular to Rhododendron (e.g., Singh et al 2009).…”

Section: Conservation Actionmentioning

confidence: 99%

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Geographic analysis of Red List Rhododendron (Ericaceae) taxa by country of origin identifies priorities for ex situ conservation

MacKay¹,

Gardiner²

2017

blum - j plant tax and plant geog

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A Red List assessment is insufficient to determine priorities for ex situ conservation in large genera such as Rhododendron, where there may be hundreds of taxa in any one Red List category. We have utilised an analysis of the geographic origins of 1 215 taxa of Rhododendron (Ericaceae) as a method to prioritise Red List taxa for ex situ conservation. This analysis includes descriptions of distribution and endemism by country of origin, analysis of the incidence of the 715 Red List taxa by country of origin, and determination of the extent to which taxa from each country of origin are in cultivation. We determined that of 30 countries of origin and a 'Europe' aggregate, 24 origins contain Red List taxa. Of those 24 origins, 17 origins and 'Europe' have greater than 75 % of Red List taxa 'in cultivation', as defined in this study, so that Target 8 of the Global Strategy for Plant Conservation has theoretically been met. However, for some of these origins the number of each taxon held 'in cultivation' is very low and genetic diversity is likely to be poor. The remaining six countries of origin have less than 75 % of Red List Rhododendron taxa recorded 'in cultivation' (Indonesia (28 %), Papua New Guinea (29 %), Malaysia (59 %), China (60 %), Japan (62 %) and Solomon Islands (0 %)). Analysis of a set of Red List factors and 'not in cultivation' factors reveals that Red List taxa from Indonesia, China and Papua New Guinea should take priority for ex situ conservation.

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Section: E Gardinermentioning

confidence: 99%

Section: Assumptions and Limitationsmentioning

confidence: 99%

Section: Assumptions and Limitationsmentioning

confidence: 99%

Section: Conservation Actionmentioning

confidence: 99%

See 2 more Smart Citations

Geographic analysis of Red List Rhododendron (Ericaceae) taxa by country of origin identifies priorities for ex situ conservation

MacKay¹,

Gardiner²

2017

blum - j plant tax and plant geog

View full text Add to dashboard Cite

show abstract

“…Any analysis of a Red List assumes a robust Red List process in the first instance, and while the IUCN assessment categories require data on habitat, extent, threats and current degree of protection (Gibbs et al 2011), some weaknesses of the 2011 assessment have been noted (MacKay 2013a, Ma et al 2014. The difficulty of assembling the knowledge in one place at one time has been recognised (Oldfield 2010, Cires et al 2013, and several iterations of a Red List assessment may be needed.…”

Section: Limitations To This Studymentioning

confidence: 99%

Analysis of geographic and taxonomic groups informs conservation of Rhododendron subgenus Vireya (Ericaceae)

MacKay¹,

Smith²,

Gardiner³

2016

blum - j plant tax and plant geog

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Phytophthora cinnamomi causing root rot on Rhododendron lapponicum and control it using potential biocontrol agents

Liu

Munir

et al. 2022

J Basic Microbiol

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Rhododendron lapponicum (R. lapponicum) is a dwarf Rhododendron species, which is severely infected with root rot and wilt in Yunnan province, China. However, the causal agent causing these symptoms was unknown. An isolate, Pci‐1 was identified as Phytophthora cinnamomi, based on its morphology and the sequences of β‐tubulin, internal transcribed spacer, and Ypt1 genes and verified according to the Koch's postulate. We found that this pathogen could infect 14 species of plants, including Althaea rosea, Viburnum cylindricum, and Brassica napus. Strain Pci‐1 could cause R. lapponicum to wither and die; and it grows best in an oat medium with pH 7.0 − 8.0 and an optimum temperature of 27°C. We suggest that the rhizosphere of R. lapponicum treated with biocontrol strains Paenibacillus polymyxoides P2‐5 and Trichoderma asperellum Tv‐1 showed a significant inhibitory effect on pathogen Pci‐1. The inhibitory effect of 70% dimethomorph + cymoxanil was significantly higher with EC50 and EC90 values of 0.1894 and 0.3618 a.i. µg/ml, respectively. Greenhouse experiments revealed that the pathogen load is decreased in the presence of potential antagonists. This study provides fundamentals on risk assessment and theoretical support for the management of P. cinnamomi pathogen and contributes significantly to the planting of forest and horticultural crops in a disease‐free environment.

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The conservation of Rhododendrons is of greater urgency than has been previously acknowledged in China

Cited by 44 publications

References 3 publications

Geographic analysis of Red List Rhododendron (Ericaceae) taxa by country of origin identifies priorities for ex situ conservation

Geographic analysis of Red List Rhododendron (Ericaceae) taxa by country of origin identifies priorities for ex situ conservation

Analysis of geographic and taxonomic groups informs conservation of Rhododendron subgenus Vireya (Ericaceae)

Phytophthora cinnamomi causing root rot on Rhododendron lapponicum and control it using potential biocontrol agents

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