Changes in Photosynthesis, Dark Respiration Rates and Photosynthetic Carbon Partitioning in Winter Rye and Wheat Seedlings during Cold Hardening

Klimov, S. V.; Астахова, Н. В.; Trunova, T. I.

doi:10.1016/s0176-1617(99)80090-x

Cited by 17 publications

(5 citation statements)

References 12 publications

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“…At a measurement temperature of 2°ë , the rates of apparent ëé 2 assimilation and dark respiration in hardened plants were substantially lower than in control plants at a measurement temperature of 22°ë (3.4-and 6.1-fold, respectively). As was noted earlier [22], photosynthesis is less sensitive to chilling than respiration. Due to this fact, the ratio of true photosynthesis to dark respiration, which is the index characterizing plant capability for hardening [17], increased from 4.7 to 6.9.…”

Section: Resultssupporting

confidence: 63%

The Effects of Cold Acclimation of Winter Wheat Plants on Changes in CO2 Exchange and Phenolic Compound Formation

Загоскина

Olenichenko

Klimov

et al. 2005

Russ J Plant Physiol

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We studied CO 2 exchange and phenolic compound production in various organs of unhardened and hardened winter wheat ( Triticum aestivum L.) plants. The rates of CO 2 assimilation at saturating illumination (photosynthesis) and CO 2 evolution in darkness (respiration) declined substantially at the autumnal decrease of ambient temperature. However, because of a higher cold resistance of photosynthesis, the ratio of photosynthesis to respiration rates increased 1.5-fold. These gas exchange changes were accompanied by the accumulation of total soluble phenolics in leaves and a polymeric phenolic compound lignin in roots. We did not observe any changes in the production of either soluble or polymeric (lignin) phenolics in crowns.

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Section: Resultssupporting

confidence: 63%

The Effects of Cold Acclimation of Winter Wheat Plants on Changes in CO2 Exchange and Phenolic Compound Formation

Загоскина

Olenichenko

Klimov

et al. 2005

Russ J Plant Physiol

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“…Decrease of PSII reversible capacity as an effect of lowering temperature in light access was observed in wheat (Hurry and Huner 1992;Klimov et al 1999) and oat (Rizza et al 2001).…”

Section: Discussionmentioning

confidence: 93%

“…Measurements of chlorophyll florescence parameters are regarded as the most accurate method to assess environmental stress impact on plants vitality (Krause and Weis 1984;Lichtenthaler et al 1986;Klimov et al 1999;Maxwell and Johnson 2000). Obtained results could indicate that cold stress damages photosynthetic apparatus in genotypes less resistant to infection with fungus that can indirectly influence plant capacity to defend against infection.…”

Section: Discussionmentioning

confidence: 99%

Cold-hardening of winter triticale (x Triticosecale Wittm.) results in increased resistance to pink snow mould Microdochium nivale (Fr., Samuels & Hallett) and genotype-dependent chlorophyll fluorescence modulations

Gołębiowska

Wędzony

2009

Acta Physiol Plant

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The resistance of triticale (x Triticosecale Wittm.) to infection of snow mould Microdochium nivale (Fr., Samuels & Hallett) was examined under different temperature pre-treatment regimes. The results of laboratory ''cold chamber'' resistance tests correlated with the breeders' report from field experiments. Studied genotypes differed substantially in their resistance to infection. Two cultivars: 'Magnat' (susceptible) and 'Hewo' (relatively resistant) were further studied as a plant model to test the role of pre-hardening and cold-hardening induction of resistance expression. Both model cultivars were susceptible to M. nivale infection without cold pre-treatment and gained genotype-depended level of resistance after 4 weeks treatment at 4°C, moreover the resistance grew gradually. Simultaneously to the resistance tests, the measurements of chlorophyll fluorescence parameters were taken. The results showed that higher vitality index Rfd of coldhardened triticale seedlings correlated with increased pink snow mould resistance while differences in other parameters of fluorescence were not distinctly significant. Establishment of Rfd in 4 weeks hardened triticale seedlings could be used for a large scale screening of breeding material in order to select potentially resistant genotypes. Such analyses have not been reported for triticale before.

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“…It is worth adding that the de crease in F N was not caused by clos ing of stomata. Sig nif i cant de crease in net pho to syn the sis rate was ob served at 2 °C in rye and wheat (Klimov et al 1999) and in spring wheat and spring oil seed rape dur ing pro longed cold ac cli mation at 2 °C (Hurry et al 1995. Ob tained re sults showed that a de cline of CO 2 assim i la tion in bar ley leaves could be as so ci ated with greater sen si tiv ity of plants to B. sorokiniana.…”

Section: Discussionmentioning

confidence: 99%

Relationship between quantum efficiency of PSII and cold-induced plant resistance to fungal pathogens

Rapacz

Hura

2004

Acta Physiol Plant

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Changes in Photosynthesis, Dark Respiration Rates and Photosynthetic Carbon Partitioning in Winter Rye and Wheat Seedlings during Cold Hardening

Cited by 17 publications

References 12 publications

The Effects of Cold Acclimation of Winter Wheat Plants on Changes in CO2 Exchange and Phenolic Compound Formation

The Effects of Cold Acclimation of Winter Wheat Plants on Changes in CO2 Exchange and Phenolic Compound Formation

Cold-hardening of winter triticale (x Triticosecale Wittm.) results in increased resistance to pink snow mould Microdochium nivale (Fr., Samuels & Hallett) and genotype-dependent chlorophyll fluorescence modulations

Relationship between quantum efficiency of PSII and cold-induced plant resistance to fungal pathogens

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