Nutrient Transfer and Plant Absorption Mechanisms

2015 ◽  
pp. 150-176
Author(s):  
Sterling B. Hendricks
Keyword(s):  
Nutrient Transfer

Anatomy and ultrastructure of haustoria in selected West Australian parasitic angiosperms

1990 ◽  
Vol 48 (3) ◽  
pp. 690-691
Author(s):  
John Kuo ◽  
John S. Pate
Keyword(s):  
Parasitic Plants ◽  
The Other ◽  
Nutrient Transfer ◽  
Direct Solution ◽  
Tracheary Elements ◽  
Solute Transfer ◽  
Glycol Methacrylate ◽  
Australian Species ◽  
Anatomy And Ultrastructure ◽  
Solution Transfer

Our understanding of nutrient transfer between host and flowering parasitic plants is usually based mainly on physiological concepts, with little information on haustorial structure related to function. The aim of this paper is to study the haustorial interface and possible pathways of water and solute transfer between a number of host and parasites.Haustorial tissues were fixed in glutaraldehyde and embedded in glycol methacrylate (LM), or fixed in glutaraldehyde then OsO4 and embedded in Spurr’s resin (TEM).Our study shows that lumen to lumen continuity occurs between tracheary elements of a host and four S.W. Australian species of aerial mistletoes (Fig. 1), and some root hemiparasites (Exocarpos spp. and Anthobolus foveolatus) (Fig. 2). On the other hand, haustorial interfaces of the root hemiparasites Olax phyllanthi and Santalum (2 species) are comprised mainly of parenchyma, as opposed to terminating tracheads or vessels, implying that direct solution transfer between partners via vessels or tracheary elements may be limited (Fig. 3).

Nutrient transfer between the root zones of soybean and maize plants connected by a common mycorrhizal mycelium

1991 ◽  
Vol 82 (3) ◽  
pp. 423-432 ◽  
Author(s):  
Gabor J. Bethlenfalvay ◽  
Maria G. Reyes-Solis ◽  
Susan B. Camel ◽  
Ronald Ferrera-Cerrato
Keyword(s):  
Nutrient Transfer ◽  
Root Zones ◽  
Maize Plants

scholarly journals Field Cage Assessment of Feeding Damage by Riptortus pedestris on Soybeans in China

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 255
Author(s):  
Wenjing Li ◽  
Yu Gao ◽  
Yinglu Hu ◽  
Juhong Chen ◽  
Jinping Zhang ◽  
...  
Keyword(s):  
Lipid Content ◽  
Transfer Rate ◽  
Soybean Seed ◽  
Dry Weight ◽  
Nutrient Transfer ◽  
Field Cage ◽  
Stay Green ◽  
Riptortus Pedestris ◽  
Green Leaves ◽  
Pest Density

The bean bug, Riptortus pedestris, is a major pest of soybeans. In order to assess the critical stages of soybean damage by R. pedestris, we tested the damage to soybeans at different growth stages (R2, R4, and R6) caused by five densities of R. pedestris (1, 2, 3, 4, and 5) through a field cage experiment. The results show that the R4 stage was the most sensitive stage in terms of suffering R. pedestris injury damage, followed by the R6 stage and then the R2 stage. The number of stay green leaves was 7.04 per plant, the abortive pod rate of the soybeans was 56.36%, and the abortive seed rate of the soybeans was 46.69%. The dry weight of the soybeans was 14.20 g at the R4 stage; these values of R4 were significantly higher than at the R2 and R6 stages. However, the dry weight of soybean seed was 4.27 g and the nutrient transfer rate was 27.01% in the R4 stage; these values were significantly lower than in the R2 and R6 stages. The number of stay green leaves, abortive pod rates, and abortive seed rates were all increased significantly with increasing pest density at each stage of soybean growth. However, the nutrient transfer rate was significantly decreased with the increase in the pest density. Soybean nutrition factors changed after they suffered R. pedestris injury; the lipid content of the soybean seed decreased and the lipid content of the soybean plant increased compared to controls, when tested with a density of five R. pedestris in the R4 stage. These results will be beneficial to the future management of R. pedestris in soybean fields.

Comparative ultrastructural analysis of mycorrhizal associations

1983 ◽  
Vol 61 (3) ◽  
pp. 917-943 ◽  
Author(s):  
Silvano Scannerini ◽  
Paola Bonfante-Fasolo
Keyword(s):  
Electron Microscopy ◽  
Surface Area ◽  
Ultrastructural Analysis ◽  
Nutrient Transfer ◽  
Cytological Feature ◽  
Symbiotic Interactions ◽  
Mycorrhizal Associations ◽  
Host Pathogen ◽  
Bacterial Associations ◽  
Functional Mechanisms

Electron microscopy is a powerful tool in understanding functional mechanisms in symbiosis (i.e., recognition and transfer of nutrients between partners), but mycorrhizal associations are not yet so well known as host–pathogen and host – mutualistic bacterial associations. However, the study of mycorrhizal ultrastructure has provided some interesting information. In fact unknown symbionts can be recognized with electron microscopy and mycorrhizae can be classified according to a sequence linking intercellular and intracellular interactions between host and fungus. General conclusions can be drawn from this ultrastructural sequence. (i) The most significant cytological feature in mycorrhizae is the presence of an interface through which partners communicate along a vast surface area. This is the key area for symbiotic interactions (both recognition and nutrient transfer) and can vary a great deal mostly in intracellular interactions. (ii) The ultracytochemical aspects of those interfaces, mostly as regards the components of the interfacial matrix, appear quite different from those of host–pathogen associations and suggest a compatibility mechanism. (iii) As regards the transfer of nutrients, even though it has been claimed that transfer of nutrient in all intracellular interactions is achieved by a digestion mechanism of the fungus by the host, available ultrastructural data are not consistent with this hypothesis.

scholarly journals The OCL3 promoter from Sorghum bicolor directs gene expression to abscission and nutrient-transfer zones at the bases of floral organs

2014 ◽  
Vol 114 (3) ◽  
pp. 489-498 ◽  
Author(s):  
Krishna K. Dwivedi ◽  
Dominique J. Roche ◽  
Tom E. Clemente ◽  
Zhengxiang Ge ◽  
John G. Carman
Keyword(s):  
Gene Expression ◽  
Sorghum Bicolor ◽  
Nutrient Transfer ◽  
Floral Organs ◽  
Transfer Zones

scholarly journals A comparative study of nutrient transfer via surface runoff from two small agricultural catchments in north China

2006 ◽  
Vol 52 (8) ◽  
pp. 1549-1558 ◽  
Author(s):  
Haiming Lu ◽  
Chengqing Yin ◽  
Weidong Wang ◽  
Baoqing Shan
Keyword(s):  
Comparative Study ◽  
Surface Runoff ◽  
North China ◽  
Nutrient Transfer ◽  
Agricultural Catchments

Interspecific nutrient transfer in a tallgrass prairie plant community

1996 ◽  
Vol 83 (2) ◽  
pp. 180-184 ◽  
Author(s):  
Laura E. Fischer Walter ◽  
David C. Hartnett ◽  
Barbara A. D. Hetrick ◽  
A. Paul Schwab
Keyword(s):  
Plant Community ◽  
Tallgrass Prairie ◽  
Nutrient Transfer ◽  
Prairie Plant
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