WALL PROJECTIONS IN THE SPOROPHYTE AND GAMETOPHYTE OF <i>SPHAEROCARPOS </i>

Kelley, Carole B.

doi:10.1083/jcb.41.3.910

Cited by 27 publications

(6 citation statements)

References 8 publications

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“…The most distinctive similarity is the occurrence of numerous wall protuberances which effectively increase the surface to volume ratio of the secretory cells (LUTTGE, 1966;SCHNEPF, 1964SCHNEPF, , 1965SCHNEPF, , 1969THOMSON and LIU, 1967;ATKINSON et al, 1967). Similar wall protuberances occur in a variety of other tissues such as developing embryos (JENSEN, 1963) between adjacent cells of sporophyte and gametophyte tissue (KELLEY, 1969), and in transfer cells (GUNNING and PATE, 1969a, b). GUN-NING and PATE reasoned that such cells are likely to be efficient in either absorptive or secretory functions and suggested that the in growths provide relatively static compartments from which solutes could be absorbed or secreted.…”

Section: Mechanism(s)mentioning

confidence: 98%

The Structure and Function of Salt Glands

Thomson¹

1975

Plants in Saline Environments

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Section: Mechanism(s)mentioning

confidence: 98%

The Structure and Function of Salt Glands

Thomson¹

1975

Plants in Saline Environments

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“…Transfer cells are induced to differentiate in response to fertilization in many bryophytes (Hebant 1975;Kelly 1969;Wiencke and Schultz 1975). Transfer cells may exist in both the gametophyte and the sporophyte (Eyme and Suire 1967) or they may be present solely on the sporophytic (Maire 1967) or gametophytic (Gunning and Pate 1969) side of the interface.…”

Section: Discussionmentioning

confidence: 99%

Eocronartium muscicola: a basidiomycetous moss parasite exploiting gametophytic transfer cells

Boehm¹,

McLaughlin²

1988

Can. J. Bot.

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1988. Eocronarti~irn rnuscicola: a basidiomycetous moss parasite exploiting gametophytic transfer cells. Can. J. Bot. 66: 762-770. The host -parasite interface in Eocronartium muscicola, Auriculariales sensu lato, was examined histologically for 6 of the 21 reported moss hosts, using light microscopy, scanning electron microscopy, and transmission electron microscopy. A unique mode of fungal biotrophy was encountered in 5 of the 6 mosses analyzed, in which E. muscicola exploits gametophytic host transfer cells concomitant with varying degrees of supplantation of the moss sporophyte. Basidiocarps are restricted in these mosses to postfertilized archegonia, in which they are seen to associate with the sporophyte foot region, where they gain access to the host transfer cell nutritional interface. Basidiocarp ontogeny is presented as it relates to the development of the host-parasite interface. The relationship of E. rnuscicola to other simple-septate auricularioid taxa and the the Uredinales is discussed. BOEHM, E. W. A,, et MCLAUGHLIN, D. J. 1988. Eocronartium muscicola: a basidiomycetous moss parasite exploiting gametophytic transfer cells. Can. J. Bot. 66 : 762 -770.

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“…Transfer cell walls in Sphaerocarpos donnellii are highly evaginated (Kelley, 1969), and transfer cells of Scapania undulata show marked enzymatic activity indicative of active transport processes (Hebant and Suire, 1974). Direct evidence for translocation, however, is lacking.…”

Section: Studies Of Surface Conduction Acrossmentioning

confidence: 99%

“…The results of culture and glucose-uptake studies emphasize the importance of the sporophytegametophyte interface in hepatics. Growth and development of sporangia are ultimately dependent upon the presence of transfer cells (Kelley, 1969;Hebant and Suire, 1974) at this juncture. It is not clear, however, whether the foot acts as a "pump" to drive water and nutrients toward the spore capsule, as Hebant (1977) has suggested for mosses, or whether translocation at the interface zone is a diffusion process only.…”

Section: Studies Of Surface Conduction Acrossmentioning

confidence: 99%

Radioactive Tracer Study of Sporophyte Nutrition in Hepatics

Thomas

Stanton

Grusak

1979

American J of Botany

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Sporophytes of Fossombronia foveolata, Lophocolea heterophylla, Pellia epiphylla, Ptilidium pulcherrimum, and Riella affinis were surgically isolated from host gametophyte tissues and treated with 14CO2. Sporophytes of all five species are capable of fixing CO2 in the light. Sporophyte/gametophyte ratios for 14CO2 fixation/mg fresh weight range between 0.12 and 0.39. Corresponding ratios for chlorophyll content are 1.07 to 3.30. Of the total 14CO2 fixed by excised Lophocolea sporophytes, 40% can be attributed to the photosynthetic activity of haploid spores. Enveloping gametophytic tissues (calyptra and pseudoperianth) inhibit photosynthesis of attached sporophytes by as much as 50%. For sustained growth, sporophytes rely on organic nutrients supplied by the gametophyte: radioactivity of Lophocolea sporophytes increases significantly after application of 14C‐glucose to host gametophytes. Surgically isolated sporophytes develop slowly in mineral culture, without significant increase in dry weight. The assumption that hepatic sporophytes are at least partly autonomous with respect to organic nutrition (an assumption that figures prominently in speculation on the evolutionary origin of the sporophyte) is confirmed.

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WALL PROJECTIONS IN THE SPOROPHYTE AND GAMETOPHYTE OF SPHAEROCARPOS

Cited by 27 publications

References 8 publications

The Structure and Function of Salt Glands

The Structure and Function of Salt Glands

Eocronartium muscicola: a basidiomycetous moss parasite exploiting gametophytic transfer cells

Radioactive Tracer Study of Sporophyte Nutrition in Hepatics

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