Photosynthetic response of Japanese rose species Rosa bracteata and Rosa rugosa to temperature and light

Ueda, Yoshihiro; Nishihara, S.; Tomita, H.; Oda, Yoshiki

doi:10.1016/s0304-4238(99)00138-7

Cited by 22 publications

(19 citation statements)

References 11 publications

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“…This physiological variable remained constant throughout the curve ( Figure 4C and D), with values around 0.10 mol H 2 O m −2 s −1 . This can be partly explained as a result of the center of origin of coffee and its adaptation to several environments, such as the physiological adaptations that can reduce respiratory rate and maximize carbon intake (Kitajima 1994, Ueda et al 2000, Boardman 1977.…”

Section: Stomatal Conductancementioning

confidence: 99%

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A new concept for insect damage evaluation based on plant physiological variables

Neves

Oliveira

Parra

2006

An. Acad. Bras. Ciênc.

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The objective of this study was to determine the damage levels caused by Orthezia praelonga Douglas, 1891 and Leucoptera coffeella (Guérin-Mèneville 1842), on rangpur lime and Obatã coffee leaves, respectively. Measurements were based on a new concept for the evaluation of the following plant physiological parameters: photosynthesis, stomatal conductance, leaf temperature and transpiration, and internal concentration of CO 2 (by infrared analyzer). A negative correlation between infestation level and photosynthesis was found, where the negative inflexion point of the curve was considered as a reference for damage levels. The control level for O. praelonga is below the 7-13% limit for damaged leaf area (40 to 70 scales per leaf), while for L. coffeella it is below the 26-36% limit for the same variable. Photosynthesis provided the best correlation for this type of analysis.

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Section: Stomatal Conductancementioning

confidence: 99%

“…This was expected because of the plant's adaptive characteristics (Kitajima 1994, Ueda et al 2000, Boardman 1977) and because stomatal conductance was constant. In this case, the values found were 1.0 to 1.1 mmol H 2 Om −2 s −1 (Figure 5C and D).…”

Section: Leaf Transpirationmentioning

confidence: 99%

A new concept for insect damage evaluation based on plant physiological variables

Neves

Oliveira

Parra

2006

An. Acad. Bras. Ciênc.

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“…In this species, bud outgrowth is inhibited within a few hours of dark exposure in rose plants first grown under white light (WL) and, thus, rich in sugars. Yet, as low an intensity of WL as 2 mmol m 22 s 21 , which is far below the light compensation point of rose plants (40-70 mmol m 22 s 21 , according to Zieslin and Tsujita, 1990;Ueda et al, 2000), is sufficient to trigger their outgrowth (Girault et al, 2008). This suggests that, in rose plants too, the triggering of bud outgrowth requires a light signal that is different from the energy supply involved in photosynthetic assimilation.…”

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confidence: 99%

Cytokinins Are Initial Targets of Light in the Control of Bud Outgrowth

et al. 2016

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Bud outgrowth is controlled by environmental and endogenous factors. Through the use of the photosynthesis inhibitor norflurazon and of masking experiments, evidence is given here that light acts mainly as a morphogenic signal in the triggering of bud outgrowth and that initial steps in the light signaling pathway involve cytokinins (CKs). Indeed, in rose (Rosa hybrida), inhibition of bud outgrowth by darkness is suppressed solely by the application of CKs. In contrast, application of sugars has a limited effect. Exposure of plants to white light (WL) induces a rapid (after 3-6 h of WL exposure) up-regulation of CK synthesis (RhIPT3 and RhIPT5), of CK activation (RhLOG8), and of CK putative transporter RhPUP5 genes and to the repression of the CK degradation RhCKX1 gene in the node. This leads to the accumulation of CKs in the node within 6 h and in the bud at 24 h and to the triggering of bud outgrowth. Molecular analysis of genes involved in major mechanisms of bud outgrowth (strigolactone signaling [RwMAX2], metabolism and transport of auxin [RhPIN1, RhYUC1, and RhTAR1], regulation of sugar sink strength [RhVI, RhSUSY, RhSUC2, and RhSWEET10], and cell division and expansion [RhEXP and RhPCNA]) reveal that, when supplied in darkness, CKs up-regulate their expression as rapidly and as intensely as WL. Additionally, up-regulation of CKs by WL promotes xylem flux toward the bud, as evidenced by Methylene Blue accumulation in the bud after CK treatment in the dark. Altogether, these results suggest that CKs are initial components of the light signaling pathway that controls the initiation of bud outgrowth.

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“…•s −1 in rose plants (Rosa rugosa) [24]. Furthermore, [25] indicated that using a light intensity of 180.7 μmol•m −2…”

Section: Optimization Of Light Intensity For Maximum Photosynthesismentioning

confidence: 99%

“…First red and Twing) increased chlorophyll content. Moreover, [24] showed that increasing light intensity and sun light increased the chlorophyll content for rose plants (Rosa rugosa). Recently, [20] showed that chlorophyll content increased with increasing the light on marigold plants, and for Ficus banjamina L. [38].…”

Section: Effect Of Different Sampling Times On Chlorophyll Contentmentioning

confidence: 99%

Optimization of Environmental Factors to Measure Physiological Parameters of Two Rose Varieties

Ibrahim¹,

Agarwal²,

Hardy³

et al. 2017

OJAppS

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Rose (Rosa hybrida L.) is one of the most important specialty cut flowers produced. Characterization of physiological variability in photosynthetic efficiencies, respiration rate and chlorophyll content is one of the greatest challenges in assessing rose net primary production of flowering, quality of cut flowers and other rose uses. Two modern rose varieties Floribunda and Hybrid Tea were used to optimize different methods for analysing physiological characteristics (photosynthesis rate, respiration rate and chlorophyll content). Many parameters were optimized, five different lights intensity were used (600, 900, 1200, 1500 and 2000 μmol•m •s −1 gave the highest photosynthesis rate. Five different measuring times were used (8 am, 10 am, 12 pm, 2 pm and 4 pm) and 12 pm was shown to be the optimum time for measuring photosynthesis rate. Among two different weather conditions (sunny day and cloudy day) sunny day was selected. For respiration rate two different measuring times (1 and 2 hours) after darkness were studied and 1 hour was chosen. Among three different times (10 am, 12 pm and 2 pm) for measuring chlorophyll content, 12 pm was selected. Using these optimized variables will allow researchers to collect robust and reproducible results to be obtained from different studies, and in turn lead to improved yields of horticultural plants.

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Photosynthetic response of Japanese rose species Rosa bracteata and Rosa rugosa to temperature and light

Cited by 22 publications

References 11 publications

A new concept for insect damage evaluation based on plant physiological variables

A new concept for insect damage evaluation based on plant physiological variables

Cytokinins Are Initial Targets of Light in the Control of Bud Outgrowth

Optimization of Environmental Factors to Measure Physiological Parameters of Two Rose Varieties

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