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Occurrence of calcium, iron, potassi...

St. John, Mark George.

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Occurrence of calcium, iron, potassium, magnesium, nitrogen, sodium, sulfur, and phosphorus within rose-stem galls and ungalled wild roses: Implications for the nutrition hypothesis of gall evolution.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Occurrence of calcium, iron, potassium, magnesium, nitrogen, sodium, sulfur, and phosphorus within rose-stem galls and ungalled wild roses: Implications for the nutrition hypothesis of gall evolution./
作者:	St. John, Mark George.
面頁冊數:	87 p.
附註:	Adviser: Joseph David Shorthouse.
Contained By:	Masters Abstracts International37-02.
標題:	Agriculture, Plant Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MQ31468
ISBN:	9780612314689

Occurrence of calcium, iron, potassium, magnesium, nitrogen, sodium, sulfur, and phosphorus within rose-stem galls and ungalled wild roses: Implications for the nutrition hypothesis of gall evolution.
St. John, Mark George.

Occurrence of calcium, iron, potassium, magnesium, nitrogen, sodium, sulfur, and phosphorus within rose-stem galls and ungalled wild roses: Implications for the nutrition hypothesis of gall evolution. - 87 p.

Adviser: Joseph David Shorthouse.

Thesis (M.Sc.)--Laurentian University (Canada), 1998.

Results of this study are discussed in light of the nutrition hypothesis of gall evolution. Similarities between galls and plant sinks are explored as is the effect of gall inducer parasitism on gall nutrient concentrations.

ISBN: 9780612314689Subjects--Topical Terms:

1028950
Agriculture, Plant Pathology.

Occurrence of calcium, iron, potassium, magnesium, nitrogen, sodium, sulfur, and phosphorus within rose-stem galls and ungalled wild roses: Implications for the nutrition hypothesis of gall evolution.
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245 1 0 $a Occurrence of calcium, iron, potassium, magnesium, nitrogen, sodium, sulfur, and phosphorus within rose-stem galls and ungalled wild roses: Implications for the nutrition hypothesis of gall evolution.
300 $a 87 p.
500 $a Adviser: Joseph David Shorthouse.
500 $a Source: Masters Abstracts International, Volume: 37-02, page: 0537.
502 $a Thesis (M.Sc.)--Laurentian University (Canada), 1998.
520 $a Results of this study are discussed in light of the nutrition hypothesis of gall evolution. Similarities between galls and plant sinks are explored as is the effect of gall inducer parasitism on gall nutrient concentrations.
520 $a The relationship between host plant and gall inducer is perhaps the most specialized of all insect/plant interactions. Insect galls are believed to be feeding adaptations which provide gall inducers with a better source of nutrition than ungalled tissues. The gall is thought to act as a plant physiological sink, accumulating high concentrations of nutritious substances such as proteins, sugars, lipids and minerals. Cynipids in the genus Diplolepis Geoffroy have been well studied and much is known of their life history, interactions with parasitoids and inquilines, gall anatomy and developmental morphology, host shifts, distribution, and more, yet little is known about the nutritional physiology of their galls.
520 $a Stem-galls induced by Diplolepis spinosa (Ashmead) on Rosa blanda Ait. and D. triforma Shorthouse and Ritchie on R. acicularis Lindl., and ungalled host plant tissues were measured for levels of organic N and minerals (Ca, Fe, K, Mg, Na, P and S) during gall growth and maturation phases. Ungalled tissues, gall tissues, and tissues growing distally to the galls all had significantly different organic N and mineral compositions. Galls either had lower or similar mean concentrations of organic N and mineral nutrients compared to ungalled host tissues in 28 of 32 comparisons; higher concentrations were measured in galls in only four cases. The concentration of K was higher in galls of D. spinosa than ungalled tissues while the concentration of Na in galls of D. triforma was also significantly higher than ungalled tissues. For more than half of the nutrients measured, the concentration found in tissues distal to the gall was greater than in the galls themselves, suggesting that host plants are not suppressing the amount of nutrients being brought to galls.
520 $a Concentrations for all nutrients measured in galls, except Na in maturation phase galls of D. spinosa, were not highly correlated with the number of gall inhabitants (inducer and parasitoids); however, amounts ($\mu $g ) of these nutrients were highly correlated with the number of gall inhabitants. Larvae of gall inducers and parasitoids were not significantly different in their mineral compositions indicating that parasitoids do not kill their hosts until adequate levels of minerals are consumed. The rate of parasitism of D. spinosa and D. triforma had no effect on the concentrations or amounts of organic N or minerals within gall tissues.
590 $a School code: 1100.
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710 2 0 $a Laurentian University (Canada). $3 1019463
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790 1 0 $a Shorthouse, Joseph David, $e advisor
791 $a M.Sc.
792 $a 1998
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