Lupinus

Smirnova and Moshkov have investigated the effects of the removal of leaves or buds and of grafting on the alkaloidal content of lupins, and Wallebroek has studied the alkaloidal and nitrogenous metabolism of Lupinus luteus seeds on germination. ... 

Vanillin, CgHgOj, is one of the most important synthetic perfumes. It is the active odorous ingredient of the vanilla pod, in which it occurs to the extent of about 2 per cent., appearing on the surface of the bean as a fine white crystalline efflorescence. It occurs naturally also in Sumatra benzoin (about 1 per cent.), Siam benzoin (15 per cent.), and the balsams of Tolu and Peru (traces). Numerous other bodies have been recorded as containing it, such as asafoetida, beetroot and asparagus, the seeds of Lupinus albus, the seeds of Sosa canina, etc. 

Rothwell and Wain (126) have isolated in crystalline form a growth inhibitor from Lupinus luteus (yellow lupine) pods which they have partially characterized. Analytical data suggested that the inhibitor possessed the characteristics of an unsaturated hydroxyketo acid. Inhibition in the wheat coleoptile cylinder test was obtained with concentrations of 0.25 to 1.0 p.p.m. 

In this example, individual plants of Lupinus sericeus Pursh were collected over a distance measuring approximately 1500 km, including most of the range of the species. hi practice, this amounted to a north-south transect running from the Alberta-British Columbia border to northern Arizona. Lupinus sericeus occurs from southeastern British Columbia and southwestern Alberta to the Kaibab Plateau in northern Arizona,... 

Fig. 2.65 Map showing the collection sites for Lupinus sericeus study...

Fleak, L. S. 1971. Biosystematics of the Lupinus sericeus complex. Ph.D. dissertation, University of Missouri. 

J. F. Johnson, D. L. Allan, C. P. Vance, and G. Weiblen, Root carbon dioxide fixation by phosphorus-deficient Lupinus albus. Plant Physiol. 7/2 19 (1996). 

B. Dinkelaker, Rdmheld, V., and H. Mar.schner, Citric acid excretion and precipitation of calcium citrate in the rhizosphere of white lupin (Lupinus aihus L.). Plant. Cell Environ. /2 285 (1989). 

P. F. White, Soil and plant factors relating to the poor growth of Lupinus species on fine-textured alkaline soils. Aust. J. Agric. Res. 4l il (1990). 

At least in some plant species, such as maize (142), Lupinus cingiisiifoliiis L. (143) and tomato (144), root exudation of di- and tricarboxylic acids (mainly... 

G. Keerthisinghe, P. J. Hooking, P. R. Ryan, and E. Delhaize, Effect of phosphorus supply on the formation and function of proteoid roots of white lupin (Lupinus albiis L.). Plant Cell Environm. 21 467 (1998). 

M. Kamh, W. J. Horst, F. Amer, and H. Mostafa, Exudation of organic anions by white lupin Lupinus albus L.) and their role in phosphate mobilization from... 

M. A. Adams and J. S. Pate, Availability of organic and inorganic forms of phosphorus to lupins (Lupinus spp.). Plant Soil 745 107 (1992). 

P. Wojtaszek, M. Stobiecki, and K. Gulewicz, Role of nitrogen and plant growth regulators in the exudation and accumulation of isoflavonoids by roots of intact white lupin (Lupinus aihus L.) plants. J. Plant Phy.siol. 742 689 (1993). 

J. Gerke, W. Romer, and A. Jungk, The excretion of citric and malic acid by proteoid roots of Lupinus albus L. effects on soil solution concentrations of phosphate, iron, and aluminium in the proteoid rhizosphere in samples of an oxisol and a luvi.sol. Z. Pflatizenerndrhr. Bodenk. /57 289 (1994). 

In concurrent research involving a longer-term study, the P. fluorescens Pf-5 strain was inoculated into soil used to grow lupine (Lupinus aihus) and barley Hordeum vulgare L.) over a several-week, period (17). It was shown that iron stress was greatest in the zone behind the root tips as compared to older root zones and in the bulk soil. Calibration of the ice-nucleation reporter activity... 

H. Gagnon, S. Tahara, and R. K. Ibrahim, Biosynthesis, accumulation and secretion of isoflavonoids during germination and development of white lupin (Lupinus aihus L ), J. E-cp. Bot. 46 609 (1995). 

Mass spectral data have also been employed for biological studies aimed at determining the distribution of quinolizidine alkaloids within a plant. For instance, the analysis of stem sections of Lupinus polyphyllus and Cytisus scoparius by laser desorption mass spectrometry led to the conclusion that these alkaloids are restricted to the epidermis and probably also to the neighboring one or two subepidermal cell layers <1984MI230>. 

Neumann G, Massonneau A, Langlade N, Dinkelaker B, Hengeler C, Romheld V, Martinoia E (2000) Physiological aspects of cluster root function and development in phosphorus-deficient white lupin (Lupinus albus L.). Ann Bot 85 909-919. doi http //aob.oxfordjournals.org/cgi/ content/abstract/85/6/909... 

Shane MW, De Vos M, De Roock S, Lambers H (2003a) Shoot P status regulates cluster-root growth and citrate exudation in Lupinus albus grown with a divided root system. Plant Cell Environ 26 265-273. doi http //www.blackwell-synergy.com/doi/abs/10.1046/ j. 1365-3040.2003.00957.x... 

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