Revival of respiration and photosynthesis in dried leaves of Polypodium polypodioides

Stuart, Tim S.

doi:10.1007/bf00385023

Cited by 76 publications

(45 citation statements)

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“…This respiratory burst (or resaturation respiration [23]) has been reported in bryophytes (6,8,16,27), ferns (20,25), and lichens (10,(21)(22)(23). It has been observed that sometimes this burst is more pronounced in species less tolerant of desiccation (8,23).…”

mentioning

confidence: 68%

“…At moderate to severe levels of water stress, respiration in sensitive and tolerant tissues generally declines, although it may be more persistent in more tolerant tissues. 02 consumption declines steadily with increasing desiccation stress in desiccation-tolerant Polypodium polypodioides (25), Myrothamnusflabellifolia (15), Neckera crispa (14), and Stratonostoc commune (14). The large increase in 02 consumption observed during the late stages of desiccation of both T ruralis and C. filicinum (i.e.…”

Section: Methodsmentioning

confidence: 99%

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Respiration in Relation to Adenosine Triphosphate Content during Desiccation and Rehydration of a Desiccation-tolerant and a Desiccation-intolerant Moss

Krochko¹,

Winner²,

Bewley³

1979

Plant Physiol.

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02 consumption by the desiccation-tolerant moss Tortula ruralis and the desiccation-intolerant Cratoneuronfidicinum increased markedly during the latter stages of desiccation. ATP content of the mosses during desiccation was not correlated with 02 consumption, but was influenced by the rate at which the mosses lost water. The more rapid the water loss, the more ATP that was present in the dry mosses. The pattern of 02 consumption on rehydration also was influenced by the previous rate of desiccation. After rapid desiccation of T. ruralis 02 consumption upon rehydration was considerably elevated, and for up to 24 hours. After very slow desiccation the elevation was small and brief. Normal 02 consumption did not occur in C. fdhicwum after rapid desiccation, but did so within a few hours of rehydration after slower speeds of drying. ATP levels in T. rralis returned to normal within 5 to 10 minutes of rehydration. In C. fiicinum, increases in ATP were closely correlated with 02 consumption. These observations are considered to be related to differential damage caused to mitochondria and to cellular integrity by different speeds of water loss. The desiccationtolerant moss appears to be able to repair the severe damage imposed by rapid desiccation whereas the desiccation-intolerant moss cannot.Upon rehydration after desiccation, respiration by desiccationtolerant lower plants characteristically is stimulated above normal (3,24). This respiratory burst (or resaturation respiration [23]) has been reported in bryophytes (6, 8, 16, 27), ferns (20, 25), and lichens (10, 21-23). It has been observed that sometimes this burst is more pronounced in species less tolerant of desiccation (8, 23). Also, the magnitude of the burst is related to the severity and duration of the desiccation period (9,16,23 containing "energy-rich macroerg bonds" (i.e. ATP) during drying. In the second study (4), it was suggested that tolerance of desiccation may not depend so much upon the maintenance of high ATP levels during drying, but rather upon the ability to resume ATP synthesis rapidly on rehydration.Generally there has been a lack of attention to the relationships between respiration and ATP synthesis under any conditions of water stress and upon relief of them. In this paper, results are presented on the correlation between 02 uptake, CO2 evolution, and ATP levels during desiccation in a desiccation-tolerant moss, Tortula ruralis, and a desiccation-intolerant moss, Cratoneuron filicinum. The consequences of different rates of desiccation were tested, since there is evidence that rate of water loss has a profound influence upon the recovery of metabolism and ofcellular integrity when these mosses subsequently are rehydrated (5, 7, 13, 19). MATERIALS AND METHODSThe collection and preparation of the gametophytes of T. ruralis ([Hedw.] Gaertn., Meyer, and Scherb.) and C. filicinum ([Hedw.] Spruce) (formally misidentified as Hygrohypnum luridum [Hedw.] Jenn.) have been described elsewhere (1, 2). Moss pieces were subjected to three...

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mentioning

confidence: 68%

Section: Methodsmentioning

confidence: 99%

Respiration in Relation to Adenosine Triphosphate Content during Desiccation and Rehydration of a Desiccation-tolerant and a Desiccation-intolerant Moss

Krochko¹,

Winner²,

Bewley³

1979

Plant Physiol.

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“…This type of rewetting effect on gas exchange is not confined to lichens and it has been observed in a variety of other tissues such as dried Polypodium leaves (Stuart, 1968), spores oi Polytrichum (Paolillo and Javels, 1969), and dry bryophytes (Hinshiri and Proctor, 1971;Ensgraber, 1954). Earlier observations are reviewed by Stocker (i960) who also discusses effects in higher plants.…”

Section: Introductionmentioning

confidence: 91%

Lichen Physiology Xiii. Effects of Rewetting Dry Lichens

1973

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SUMMARYTwo distinct phenomena occur when water is added to air-dry lichens: (1) an immediate nonmetabolic release of a substantial volume of gas containing 75-80% COj; and (2) a rapid rise in respiration to rates well above control values. This excess respiration ('resaturation respiration') persisted for ahout 9 hours in Peltigera polydactyla and about 2 in Xanthoria aureola and was, unlike basal respiration, azidc-and cyanide-sensitive. When the mannitol content of Peltigera discs had been doubled by feeding glucose before drying, the initial rate of subsequent resaturation respiration was correspondingly much higher. Cycles of wetting and drying caused progressive reductions both in mannitol content and resaturation respiration. In Peltigera, resaturation respiration occurred if the water content of discs had fallen below approximately 40% of maximum. Xanthoria aureola, which grows in drier habitats than Peltigera polydactyla, was much more tolerant of cycles of wetting and drying and showed much less intense resaturation respiration.

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“…Polypodium is tolerant of extreme variation in cellular hydration, and can lose more than 97% of its water content without irreversible damage to its photosynthetic potential (Stuart 1968). Polypodium appears to be more shade tolerant than Tillandsia (Muslin and Homann 1992).…”

Section: Study Speciesmentioning

confidence: 99%

Epiphyte host preferences and host traits: mechanisms for species-specific interactions

et al. 2002

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We investigated species-specific relationships among two species of vascular epiphytes and ten host tree species in a coastal plain forest in the southeastern United States. The epiphytes Tillandsia usneoides and Polypodium polypodioides were highly associated with particular host species in the field, but host traits that favored colonization were inadequate to fully explain the epiphyte-host associations for either epiphyte. Field transplant experiments that bypassed epiphyte colonization demonstrated that the growth of epiphytes was significantly higher on host tree species that naturally bore high epiphyte loads than on host species with few or no epiphytes. These species-specific relationships were highly correlated with the water-holding capacity of the host tree's bark. Positive and negative effects of throughfall, light attenuation by the canopy, and bark stability did not explain the overall patterns of host specificity, but did correlate with some epiphyte-host species relationships. The relative importance of particular host traits differed between the "atmospheric epiphyte" Tillandsia, and the fern Polypodium, which roots in the bark of its hosts. Species-specific interactions among plants, such as those described here, suggest that communities are more than individualistic assemblages of co-occurring species.

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Revival of respiration and photosynthesis in dried leaves of Polypodium polypodioides

Cited by 76 publications

References 20 publications

Respiration in Relation to Adenosine Triphosphate Content during Desiccation and Rehydration of a Desiccation-tolerant and a Desiccation-intolerant Moss

Respiration in Relation to Adenosine Triphosphate Content during Desiccation and Rehydration of a Desiccation-tolerant and a Desiccation-intolerant Moss

Lichen Physiology Xiii. Effects of Rewetting Dry Lichens

Epiphyte host preferences and host traits: mechanisms for species-specific interactions

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