The Effects of Low Growth and Measurement Temperature on the Respiratory Properties of Five Temperate Species

Collier, Donald E.; Cummins, W. Raymond

doi:10.1093/oxfordjournals.aob.a087966

Cited by 28 publications

(22 citation statements)

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“…Some studies showed that cytochrome pathway is more sensitive to short-term changes in temperature than alternative pathway [4], whereas, some other reports showed that alternative pathway is more temperature sensitive [7]. In our experiment, total, SHAM-resistant and KCN-resistant respiration in control leaves and roots had similar Q 10 ( Table 1), suggesting similar temperature sensitivity.…”

Section: Discussionsupporting

confidence: 53%

Different effects of chilling on respiration in leaves and roots of cucumber (Cucumis sativus)

Shi

Song

et al. 2006

Plant Physiology and Biochemistry

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Section: Discussionsupporting

confidence: 53%

Different effects of chilling on respiration in leaves and roots of cucumber (Cucumis sativus)

Shi

Song

et al. 2006

Plant Physiology and Biochemistry

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“…Respiration rates typically increase in response to short-term increases in ambient temperature and indeed flower respiration rates are known to increase with flower tissue temperature under laboratory conditions [52]. Although cool temperatures associated with lower respiration rates prolong flower lifespans in cut flowers [53,54], it is known that longer term responses to temperature in other plant organs may differ from short-term responses since respiration acclimates to the thermal environment [78–80]. Flower respiration rates have been measured for some alpine species [20,81], but research on acclimation and its effect on rates of flower development, and ultimately potential flower longevity, is lacking.…”

Section: Discussionmentioning

confidence: 99%

Plastic Responses Contribute to Explaining Altitudinal and Temporal Variation in Potential Flower Longevity in High Andean Rhodolirion montanum

et al. 2016

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The tendency for flower longevity to increase with altitude is believed by many alpine ecologists to play an important role in compensating for low pollination rates at high altitudes due to cold and variable weather conditions. However, current studies documenting an altitudinal increase in flower longevity in the alpine habitat derive principally from studies on open-pollinated flowers where lower pollinator visitation rates at higher altitudes will tend to lead to flower senescence later in the life-span of a flower in comparison with lower altitudes, and thus could confound the real altitudinal pattern in a species´ potential flower longevity. In a two-year study we tested the hypothesis that a plastic effect of temperature on flower longevity could contribute to an altitudinal increase in potential flower longevity measured in pollinator-excluded flowers in high Andean Rhodolirium montanum Phil. (Amaryllidaceae). Using supplemental warming we investigated whether temperature around flowers plastically affects potential flower longevity. We determined tightly temperature-controlled potential flower longevity and flower height for natural populations on three alpine sites spread over an altitudinal transect from 2350 and 3075 m a.s.l. An experimental increase of 3.1°C around flowers significantly decreased flower longevity indicating a plastic response of flowers to temperature. Flower height in natural populations decreased significantly with altitude. Although temperature negatively affects flower longevity under experimental conditions, we found no evidence that temperature around flowers explains site variation in flower longevity over the altitudinal gradient. In a wetter year, despite a 3.5°C temperature difference around flowers at the extremes of the altitudinal range, flower longevity showed no increase with altitude. However, in a drier year, flower longevity increased significantly with altitude. The emerging picture suggests an increase in flower longevity along the altitudinal gradient is less common for potential flower longevity than for open-pollination flower longevity. Independently of any selection that may occur on potential longevity, plastic responses of flowers to environmental conditions are likely to contribute to altitudinal variation in flower longevity, especially in dry alpine areas. Such plastic responses could push flowers of alpine species towards shorter life-lengths under climate change, with uncertain consequences for successful pollination and plant fitness in a warming world.

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“…Differences in the rate of R at standard measurement temperatures are also commonly exhibited by plants that grew and developed under contrasting temperature regimes (either in the laboratory or in the field) (e.g. Figs 1, 3; Billings and Mooney 1968;Chabot and Billings 1972;Körner and Larcher 1988;Collier and Cummins 1990;Semikhatova et al 1992;Collier 1996;Goldstein et al 1996;Arnone and Körner 1997;Zha et al 2002). In some cases, acclimation is associated with a change in the rate of R primarily at moderate to high measuring temperatures, with little or no change in R at low measuring temperatures (i.e.…”

Section: Overviewmentioning

confidence: 99%

The hot and the cold: unravelling the variable response of plant respiration to temperature

Atkin¹,

Bruhn

Hurry

et al. 2005

Functional Plant Biol.

437

410

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This paper is part of The Evans Review series, named for Dr Lloyd Evans. The series contains reviews that are critical,state-of-the-art evaluations that aim to advance our understanding, rather than being exhaustive compilations of information, and are written by invitation.Abstract. When predicting the effects of climate change, global carbon circulation models that include a positive feedback effect of climate warming on the carbon cycle often assume that (1) plant respiration increases exponentially with temperature (with a constant Q 10 ) and (2) that there is no acclimation of respiration to long-term changes in temperature. In this review, we show that these two assumptions are incorrect. While Q 10 does not respond systematically to elevated atmospheric CO 2 concentrations, other factors such as temperature, light, and water availability all have the potential to influence the temperature sensitivity of respiratory CO 2 efflux. Roots and leaves can also differ in their Q 10 values, as can upper and lower canopy leaves. The consequences of such variable Q 10 values need to be fully explored in carbon modelling. Here, we consider the extent of variability in the degree of thermal acclimation of respiration, and discuss in detail the biochemical mechanisms underpinning this variability; the response of respiration to long-term changes in temperature is highly dependent on the effect of temperature on plant development, and on interactive effects of temperature and other abiotic factors (e.g. irradiance, drought and nutrient availability). Rather than acclimating to the daily mean temperature, recent studies suggest that other components of the daily temperature regime can be important (e.g. daily minimum and / or night temperature).In some cases, acclimation may simply reflect a passive response to changes in respiratory substrate availability, whereas in others acclimation may be critical in helping plants grow and survive at contrasting temperatures. We also consider the impact of acclimation on the balance between respiration and photosynthesis; although environmental factors such as water availability can alter the balance between these two processes, the available data suggests that temperature-mediated differences in dark leaf respiration are closely linked to concomitant differences in leaf photosynthesis. We conclude by highlighting the need for a greater process-based understanding of thermal acclimation of respiration if we are to successfully predict future ecosystem CO 2 fluxes and potential feedbacks on atmospheric CO 2 concentrations.

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The Effects of Low Growth and Measurement Temperature on the Respiratory Properties of Five Temperate Species

Cited by 28 publications

References 0 publications

Different effects of chilling on respiration in leaves and roots of cucumber (Cucumis sativus)

Different effects of chilling on respiration in leaves and roots of cucumber (Cucumis sativus)

Plastic Responses Contribute to Explaining Altitudinal and Temporal Variation in Potential Flower Longevity in High Andean Rhodolirion montanum

The hot and the cold: unravelling the variable response of plant respiration to temperature

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