Effects of drought and N level on the interactions of the root hemiparasite Rhinanthus alectorolophus with a combination of three host species

Plant Biology ◽  
2019 ◽  
Vol 22 (S1) ◽  
pp. 84-92 ◽  
Author(s):  
L. Korell ◽  
T. M. Sandner ◽  
D. Matthies ◽  
K. Ludewig
Keyword(s):  
Host Species ◽  
Root Hemiparasite ◽  
N Level ◽  
Effects Of Drought

Natural diversity of Santalum spicatum host species in south-coast river systems and their incorporation into profitable and biodiverse revegetation

2003 ◽  
Vol 51 (6) ◽  
pp. 741 ◽  
Author(s):  
G. S. Woodall ◽  
C. J Robinson
Keyword(s):  
Host Species ◽  
Population Decline ◽  
South Coast ◽  
The South ◽  
River Catchment ◽  
Root Hemiparasite ◽  
Farming Community ◽  
Wide Range ◽  
Santalum Spicatum ◽  
River Catchments

The commercially valuable root hemiparasite Santalum spicatum (R.Br.) A.DC. (sandalwood) once grew throughout the medium- to low-rainfall areas of the south-western agricultural region of Australia; however, this resource has been exhausted by over-exploitation and clearing for agriculture. There has been growing interest from the farming community and other investors in the development of a plantation Santalum spicatum industry in southern Western Australia. This study investigated the distribution of remnant S. spicatum within the Pallinup River catchment and assessed the risk of S. spicatum population decline due to salinity. The natural range of host species at different sites (river catchments) across the south coast was also investigated. Remnant populations of S.�spicatum within and adjacent to the Pallinup River catchment were small (1–70 trees) and highly fragmented. The risk of further population decline due to salinity was concluded to be small because remnant trees were generally growing in well drained, sandy soils that were elevated above (median 9 m) their immediate drainage line. Across the seven river catchments surveyed, S. spicatum occurred in a range of vegetation associations and parasitised numerous species (68) from a wide range of genera and families. The suite of species exploited varied within and between catchments. Thirty species, including most monocots and Myrtaceae, were not successfully parasitised. Remnant S. spicatum always occurred on well drained soil types that supported open-woodland or mallee–heath communities. Sandalwood plantations, supported by numerous individuals of a range of host species (10–40 species), were shown to be productive in terms of sandalwood growth. The scale of the developing sandalwood plantation industry is likely to be small and unlikely to cover large areas of catchments. Thus, this industry alone is unlikely to address the salinity crisis through broadscale recharge management. However, additional to on-site recharge reduction, biodiverse host plantations may improve the prospects for biodiversity and rivers in salinising landscapes through the protection and enhancement of natural biodiversity, creation of new habitat, conservation of plant species and by providing a commercial incentive to protect biodiversity.

Effect of different host plants on the growth of the root hemiparasite Santalum acuminatum (quandong)

2002 ◽  
Vol 42 (1) ◽  
pp. 97 ◽  
Author(s):  
Beth R. Loveys ◽  
Stephen D. Tyerman ◽  
Brian R. Loveys
Keyword(s):  
Host Plant ◽  
Host Species ◽  
Host Plants ◽  
Detrimental Effect ◽  
Dry Mass ◽  
Average Height ◽  
Root Hemiparasite ◽  
Atriplex Nummularia ◽  
Commercial Crop ◽  
Indigenous Foods

In recent years, the root hemiparasite Santalum acuminatum (quandong) has become an increasingly important commercial crop within the indigenous foods market. Relatively little is known of the significance of the host species on quandong growth and development. This paper presents data from a glasshouse pot experiment showing the effect of 4 different host species on the growth of quandong. Quandong growth, as measured by height and dry-mass accumulation, was significantly improved when grown in the presence of a host plant compared with being grown alone. Quandong grown with a host achieved an average height of 45 cm, while those grown alone grew up to only 37 cm. The host species also had an impact on the growth of quandong. Quandong had no detrimental effect on the growth of its host plant. Quandong grown with Myoporum parvifolium and Atriplex nummularia accumulated a significantly greater amount of dry biomass than quandong grown alone.

The effect of host defoliation on hemiparasitic-host interactions between Rhinanthus serotinus and two Poa species

1999 ◽  
Vol 77 (4) ◽  
pp. 523-530 ◽  
Author(s):  
Susanna Puustinen ◽  
Veikko Salonen
Keyword(s):  
Host Species ◽  
Poa Pratensis ◽  
Parasitic Plant ◽  
Poa Annua ◽  
Total Biomass ◽  
Root Hemiparasite ◽  
Host Interactions ◽  
Relative Value ◽  
Grass Hosts ◽  
Host Parasite

We determined in a greenhouse experiment whether experimental defoliation of the host affects the performance of the parasitic plant and whether the effects on the success of the parasite depend on the host species. We also asked whether two species of grass hosts differ in response to simultaneous defoliation and hemiparasitic infection. The experiment had a complete 2 × 3 × 2 factorial design, with host species (Poa annua L. or Poa pratensis L.) combined with defoliation (undefoliated, 50% defoliated, or 100% defoliated) and hemiparasitic infection (parasitized or unparasitized). Defoliation reduced the final biomass of both host species. However, total biomass and the number of flowers produced by the hemiparasitic Rhinanthus serotinus (Schönh.) Oborny was reduced only when the host was P. annua and when the host was completely defoliated. Rhinanthus infection significantly decreased the final biomass of both host species. However, the two hosts differed in their responses: the biomass of undefoliated P. annua plants was reduced four times more than that of undefoliated P. pratensis plants. The results indicate that the relative value of different host species depends on the intensity of defoliation.Key words: root hemiparasite, host defoliation, host-parasite interaction, Poa annua, Poa pratensis, Rhinanthus serotinus.

Host species affects the phenolic compounds content in Hypogymnia physodes (L.) Nyl. thalli

2019 ◽  
Vol 47 (1) ◽  
pp. 149-160
Author(s):  
E Latkowska ◽  
J. Bialczyk ◽  
M Węgrzyn ◽  
U. Erychleb
Keyword(s):  
Phenolic Compounds ◽  
Host Species ◽  
Hypogymnia Physodes

Effects of drought and nitrogen addition on growth and leaf physiology of Pinus massoniana seedlings

2019 ◽  
Vol 51 (5) ◽  
Author(s):  
Defu Wang ◽  
Guomin Huang ◽  
Honglang Duan ◽  
Xueming Lei ◽  
Wenfei Liu ◽  
...  
Keyword(s):  
Pinus Massoniana ◽  
Nitrogen Addition ◽  
Leaf Physiology ◽  
Effects Of Drought
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