Effects of high light and low temperature during harsh winter on needle photodamage of Abies mariesii growing at the forest limit on Mt. Norikura in Central Japan

Plant Science ◽  
2003 ◽  
Vol 165 (1) ◽  
pp. 257-264 ◽  
Author(s):  
Jun-ya Yamazaki ◽  
Aiko Ohashi ◽  
Yuko Hashimoto ◽  
Eriko Negishi ◽  
Soji Kumagai ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Light ◽  
Central Japan ◽  
Abies Mariesii ◽  
Forest Limit

Environmental Influence on the Tolerance of Corn to Atrazine

Weed Science ◽  
1970 ◽  
Vol 18 (4) ◽  
pp. 509-514 ◽  
Author(s):  
Lafayette Thompson ◽  
F. W. Slife ◽  
H. S. Butler
Keyword(s):  
Zea Mays ◽  
High Temperature ◽  
Low Temperature ◽  
Light Intensity ◽  
Environmental Influence ◽  
High Light Intensity ◽  
High Light ◽  
Growth Chamber ◽  
Peptide Conjugates ◽  
Before And After

Corn(Zea maysL.) in the two to three-leaf stage grown 18 to 21 days in a growth chamber under cold, wet conditions was injured by postemergence application of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) plus emulsifiable phytobland oil. Injury was most severe when these plants were kept under cold, wet conditions for 48 hr after the herbicidal spray was applied, followed by exposure to high light intensity and high temperature. Under these growth chamber conditions, approximately 50% of the atrazine-treated plants died. Since wet foliage before and after application increased foliar penetration and low temperature decreased the rate of detoxication to peptide conjugates, atrazine accumulated under cold, wet conditions. This accumulation of foliarly-absorbed atrazine and the “weakened” conditions of the plants grown under the stress conditions is believed to be responsible for the injury to corn. Hydroxylation and the dihydroxybenzoxazin-3-one content in the roots were reduced at low temperature, but it is unlikely that this contributed to the death of the corn.

Coexistence of Abies mariesii and Abies veitchii in a subalpine fir-wave forest

2007 ◽  
Vol 37 (11) ◽  
pp. 2142-2152 ◽  
Author(s):  
Shin Ugawa ◽  
Kojiro Iwamoto ◽  
Kenji Fukuda
Keyword(s):  
Shade Tolerance ◽  
Height Growth ◽  
Stand Development ◽  
Central Japan ◽  
Subalpine Fir ◽  
Abies Veitchii ◽  
Abies Mariesii ◽  
Seedling Bank ◽  
Mature Stand ◽  
Sapling Bank

To clarify the mechanisms underlying the coexistence of Abies mariesii Masters and Abies veitchii Lindl. in a fir-wave forest, we surveyed the population dynamics of the two Abies species throughout stand development on Mount Shimagare, central Japan. We established three belt transects and found that, overall, A. veitchii dominated this fir-wave forest. However, A. mariesii dominated the canopy initially, whereas A. veitchii increased as stand development progressed; thus, dominant A. mariesii was eventually replaced by A. veitchii. This replacement was explained by the presence of an A. mariesii sapling bank that formed under the canopy of a mature stand and by the large A. veitchii seedling bank resulting from greater seed production. For ordinary canopy individuals, which are taller than midcanopy individuals, the increase in height suggested that taller individuals grow faster vertically regardless of species; moreover, height growth did not differ significantly between the two Abies species, which facilitated the growth of A. mariesii into the canopy and the production of seeds for the next generation. We concluded that the persistence of A. mariesii in this fir-wave forest is supported by its shade tolerance.

scholarly journals Ecophysiological changes and spore formation: two strategies in response to low‐temperature and high‐light stress in Klebsormidium cf. flaccidum (Klebsormidiophyceae, Streptophyta) 1

2020 ◽  
Vol 56 (3) ◽  
pp. 649-661 ◽  
Author(s):  
Fátima Míguez ◽  
Andreas Holzinger ◽  
Beatriz Fernandez‐Marin ◽  
José I. García‐Plazaola ◽  
Ulf Karsten ◽  
...  
Keyword(s):  
Low Temperature ◽  
Light Stress ◽  
High Light ◽  
Spore Formation ◽  
High Light Stress

Effect of Membrane Fluidity on Photoinhibition of Isolated Thylakoids Membranes at Room and Low Temperature

2001 ◽  
Vol 56 (5-6) ◽  
pp. 369-374 ◽  
Author(s):  
Maya Velitchkova ◽  
Antoaneta Popova ◽  
Tzvetelina Markova
Keyword(s):  
Low Temperature ◽  
Membrane Fluidity ◽  
Light Stress ◽  
Photosynthetic Apparatus ◽  
Chemical Properties ◽  
Thylakoid Membranes ◽  
High Light Intensity ◽  
Photochemical Activity ◽  
High Light ◽  
Time Dependencies

The relationship between thylakoid membrane fluidity and the process of photoinhibition at room and low (4 °C) temperature was investigated. Two different membrane perturbing agents - cholesterol and benzylalcohol were applied to manipulate the fluidity of isolated pea thylakoids. The photochemical activity of photosystem I (PSI) and photosystem II (PSII), polarographically determined, were measured at high light intensity for different time of illumination at both temperatures. The exposure of cholesterol- and benzylalcohol-treated thylakoid membranes to high light intensities resulted in inhibition of both studied photochemical activities, being more pronounced for PSII compared to PSI. Time dependencies of inhibition of PSI and PSII electron transport rates for untreated and membranes with altered fluidity were determined at 20 °C and 4 °C. The effect is more pronounced for PSII activity during low-temperature photoinhibition. The data are discussed in terms of the determining role of physico-chemical properties of thylakoid membranes for the response of photosynthetic apparatus to light stress.

Denudation history of the Kiso Range, central Japan, and its tectonic implications: Constraints from low-temperature thermochronology

Island Arc ◽  
2012 ◽  
Vol 21 (1) ◽  
pp. 32-52 ◽  
Author(s):  
SHIGERU SUEOKA ◽  
BARRY P. KOHN ◽  
TAKAHIRO TAGAMI ◽  
HIROYUKI TSUTSUMI ◽  
NORIKO HASEBE ◽  
...  
Keyword(s):  
Low Temperature ◽  
Central Japan ◽  
Tectonic Implications ◽  
History Of

Responses of Colobanthus quitensis (Kunth) Bartl. to high light and low temperature

Polar Biology ◽  
2004 ◽  
Vol 27 (3) ◽  
pp. 183-189 ◽  
Author(s):  
Eduardo P�rez-Torres ◽  
Le�n A. Bravo ◽  
Luis J. Corcuera ◽  
Jorge Dinamarca
Keyword(s):  
Low Temperature ◽  
High Light ◽  
Colobanthus Quitensis

scholarly journals Genome-Wide Identification and Expression Analyses of the Fibrillin Family Genes Reveal Their Involvement in the Photoprotection in Cucumber

2018 ◽  
Author(s):  
Inyoung Kim ◽  
Sang-Choon Lee ◽  
Eun-Ha Kim ◽  
Kiwhan Song ◽  
Tae-Jin Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dna Sequences ◽  
Light Stress ◽  
High Light ◽  
Light Conditions ◽  
Transcript Levels ◽  
Photosynthetic Organisms ◽  
Conserved Domain ◽  
Genome Wide ◽  
Cucumber Genome

Fibrillin (FBN) is a plastid lipid-associated protein found in photosynthetic organisms from cyanobacteria to plants. In this study, 10 CsaFBN genes were identified in genomic DNA sequences of cucumber (Chinese long and Gy14) through database searches using the conserved domain of FBN and the 14 FBN genes of Arabidopsis. Phylogenetic analysis of CsaFBN protein sequences showed that there was no counterpart of Arabidopsis and rice FBN5 in the cucumber genome. FBN5 is essential for growth in Arabidopsis and rice; its absence in cucumber may be because of incomplete genome sequences or that another FBN carries out its functions. Among the 10 CsaFBN genes, CsaFBN1 and CsaFBN9 were the most divergent in terms of nucleotide sequences. Most of the CsaFBN genes were expressed in the leaf, stem, and fruit. CsaFBN4 showed the highest mRNA expression levels in various tissues, followed by CsaFBN6, CsaFBN1, and CsaFBN9. High-light stress combined with low temperature decreased photosynthetic efficiency and highly induced transcript levels of CsaFBN1, CsaFBN6, and CsaFBN11, which decreased after 24 h treatment. Transcript levels of the other seven genes were changed only slightly. This result suggests that CsaFBN1, CsaFBN6, and CsaFBN11 may be involved in photoprotection under high-light conditions at low temperature.

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