Shade mitigates photoinhibition and enhances water use efficiency in kiwifruit under drought

Montanaro, Giuseppe; Dichio, Bartolomeo; Xiloyannis, Cristos

doi:10.1007/s11099-009-0057-9

Cited by 35 publications

(24 citation statements)

References 41 publications

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“…The sunlit portion of a canopy receives both direct and diffuse radiation, while shaded leaves receive only diffuse radiation for photosynthesis; therefore, the temperature of shaded leaves is usually a few degrees lower than that of sunlit leaves (Spayd et al, 2002). For example, shading a canopy from the Sun was found to be effective for photoinhibition mitigation and water use efficiency (WUE) improvement (Alarcon et al, 2006;Montanaro et al, 2009;Sofo et al, 2009). For example, shading a canopy from the Sun was found to be effective for photoinhibition mitigation and water use efficiency (WUE) improvement (Alarcon et al, 2006;Montanaro et al, 2009;Sofo et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Systemic change in leaf temperature can significantly affect the C assimilation and transpiration (Amissah et al, 2015;Martins et al, 2014;Quero et al, 2006). For example, shading a canopy from the Sun was found to be effective for photoinhibition mitigation and water use efficiency (WUE) improvement (Alarcon et al, 2006;Montanaro et al, 2009;Sofo et al, 2009). Rising temperature leads to increases in stomatal conductance and transpiration, which in turn may result in reduction of leaf temperature (Urban et al, 2017a(Urban et al, , 2017b.…”

Section: Introductionmentioning

confidence: 99%

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Changes in the Shadow: The Shifting Role of Shaded Leaves in Global Carbon and Water Cycles Under Climate Change

Chen

Gonsamo

et al. 2018

Geophysical Research Letters

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Globally shaded leaves contribute to more than a half of the total increase in gross primary production (GPP; 7.6 Pg C) for 1982–2016. During 1982–2016, the fraction of shaded GPP increases by 1.1% (p < 0.01) in tropical forests and decreases by 1.4% (p < 0.01) and 1.8% (p < 0.01) in evergreen needleleaf and deciduous needleleaf boreal forests, respectively, suggesting an ecological niche of certain canopy structure for ecosystems to achieve maximum GPP. Unlike transpiration from sunlit leaves that has a turning point in the trend in 2003, global transpiration from shaded leaves steadily increased at the rate of 34 km3/year (p < 0.0001) during 1982–2016. Our study therefore suggests that shaded leaves have an increasing role in buffering the adverse impact of climate change and extremes. Further studies are still needed to reduce the uncertainties in reported trends arisen from climate forcing data, leaf area index, and land cover and land change products.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Changes in the Shadow: The Shifting Role of Shaded Leaves in Global Carbon and Water Cycles Under Climate Change

Chen

Gonsamo

et al. 2018

Geophysical Research Letters

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“…The vegetation with a low LCP and high LSP usually had a strong adaptability to light environment (Sofo et al, 2009;Montanaro et al, 2009). This study indicate that LCP and AQY of C. radicans were about 21.6 to 22.8 µmol/m 2 /s and 0.033 to 0.049 µmol/m 2 /s respectively.…”

Section: Discussionmentioning

confidence: 66%

“…The processes of photosynthesis and transpiration were hypersensitive to changes in the environment for plants (Moutinho-Pereira et al, 2004). The environment responses of leaf P N showed that plants could live and grow under different light conditions and adapt to continual environment changes (Mielke et al, 2000;Montanaro et al, 2009). The fitting soil water and light conditions of WUE and LUE were ascertained by improving high photosynthetic productivity and effective transpiration for C. radicans.…”

Section: Discussionmentioning

confidence: 99%

Critical responses of photosynthetic efficiency in Campsis radicans (L.) Seem to soil water and light intensities

Jiangbao¹

2011

Afr. J. Biotechnol.

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Campsis radicans (L.) Seem is one of the main forestation tree species in semi-arid loess hilly region. Using the CIRAS-2 portable photosynthesis system, the light-response of the photosynthetic efficiency parameters of three-year-old C .radicans leaves, such as net photosynthetic rate (P N), transpiration rate (Tr), water use efficiency (WUE), and light use efficiency (LUE), were studied under different soil water conditions in order to explore the effects of soil water stress on photosynthesis and the suitable soil water content for water-saving irrigation of this liana. Soil water and light intensity needed by the growth and development of C .radicans were analyzed. The results show that P N , Tr, WUE, and LUE of the leaves had threshold value to soil water and photosynthetically-active radiation (PAR). The nonrectangular hyperbola model was used to simulate light-response curve and the convexity was about 1. With the increase of soil relative water content of field capacity (Wr, ranged from 20.1% to 71.1%), the light compensation point declined while light saturation point, the maximum P N and apparent quantum yield increased. When Wr was about 71.7%, the light compensation point was at the minimum (21.61µmol/m 2 /s) and the light saturation point was at the maximum (1400 µmol/m 2 /s). In order to maintain the normal plant growth and have higher P N , LUE, and WUE synchronously, the range of Wr was from 49.5 to 71.1%. The optimum Wr was 71.1%, and the minimum Wr was 28.2% for the normal growth of C .radicans. The high P N and WUE were recorded when PAR ranged from 800 to 1600 µmol/m 2 /s and the light saturation points ranged from 800 to 1400 µmol/m 2 /s. The peak value of LUE was found when PAR ranged from 100 to 300 µmol/m 2 /s, indicating that the C. radicans had high adaptability to light conditions.

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“…Kondisi kekeringan dapat menurunkan kandungan klorofil tanaman (Bhosale & Shinde, 2011). Dimana ketersediaan kandungan klorofil didalam tanaman dapat berpengaruh terhadap pembentukan karbohidrat (Montanaro et al, 2009). Konsentrasi klorofil yang tinggi berhubungan dengan laju fotosintesis yang tinggi (Bhosale & Shinde, 2011) dan peningkatan kandungan klorofil di bawah naungan merupakan mekanisme adaptasi tanaman (Padmapriya et al, 2007) (Setiawan, 2009).…”

Section: Pendahuluanunclassified

Keragaan pertumbuhan tanaman honje (Etlingera elatior) pada beberapa level kerapatan naungan

Setiawan

2019

J. AGRO

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Honje (Etlingera elatior) adalah tanaman multifungsi yang telah digunakan untuk tujuan pertamanan, kuliner, obat-obatan dan bunga potong. Tujuan penelitian ini adalah untuk mengetahui keragaan pertumbuhan vegetatif tanaman honje di bawah naungan pada beberapa tingkat kerapatan paranet. Penelitian dilaksanakan dari bulan Desember 2016 sampai April 2017 di Kebun Percobaan Universitas Trunojoyo Madura, menggunakan rancangan acak kelompok faktor tunggal dengan tiga perlakuan pemberian naungan paranet yaitu: 0% (tanpa naungan paranet), naungan paranet 65%, dan naungan paranet 75% (kontrol), yang diulang lima kali. Setiap unit percobaan terdiri atas enam tanaman honje. Hasilnya menunjukkan bahwa pertumbuhan tanaman tertinggi, jumlah daun per rumpun dan kandungan klorofil terbanyak dihasilkan pada naungan 65%. Jumlah anakan terbanyak (6,7) dihasilkan pada kondisi naungan 75%. Kerapatan stomata perlahan meningkat dengan bertambahnya umur, tertinggi sekitar 209,4 mm-2. Adaptasi honje pada kondisi naungan 65% berpeluang dikembangkan sebagai tanaman hias, ramuan herbal atau sayuran alternatif di Madura.ABSTRACTTorch ginger (Etlingera elatior) is a multifunctional crop that has been used for ornamental, culinary, medicinal and cutting flower purposes. The aim of this study was to determine the vegetative growth of torch ginger under different density levels of shading net. The research was conducted from December 2016 to April 2017 in the experimental field of University of Trunojoyo Madura in randomized block design with three paranet shade treatments, respectively: 0% (without paranet shade), 65% paranet shade, and 75% paranet shade (control), with five replications. Each experimental unit consisted of six torch ginger plants. The results indicated that 65% paranet shade gave the best performance for plant height, the number of leaves per clump, and chlorophyll content. The 75% paranet shade gave the highest number of thillers (6.7). The density of stomata was slowly increased in line with the maturity and reached the highest density in 209,4 mm-2. The adaptation of torch ginger at 65% shade condition has an opportunity to be developed as an ornamental plant, aromatic herbs or alternative vegetable in Madura.conditions has an opportunity to be developed as an ornamental plant, aromatic herbs or alternative vegetable in Madura.

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Shade mitigates photoinhibition and enhances water use efficiency in kiwifruit under drought

Cited by 35 publications

References 41 publications

Changes in the Shadow: The Shifting Role of Shaded Leaves in Global Carbon and Water Cycles Under Climate Change

Changes in the Shadow: The Shifting Role of Shaded Leaves in Global Carbon and Water Cycles Under Climate Change

Critical responses of photosynthetic efficiency in Campsis radicans (L.) Seem to soil water and light intensities

Keragaan pertumbuhan tanaman honje (Etlingera elatior) pada beberapa level kerapatan naungan

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