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Ritu Dhir, Richard L. Harkess, and Guihong Bi

Pelargonium × hortorum ( Lee et al., 1996 ) and chile peppers ( Anchondo et al., 2001 ). Fe deficiency is accompanied by a decrease in all membrane components, including the electron carriers in the photosynthetic electron transport chain ( Spiller and Terry

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Mengmeng Gu, James A. Robbins, Curt R. Rom, and Hyun-Sug Choi

increased linearly at low PPFD, where it was limited by electron transport rate, and gradually reached a plateau where A would be limited by Rubisco capacity ( Ogren, 1993 ). Detectable decrease in assimilation at high PPFD, an indication of photoinhibition

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Ritu Dhir, Richard L. Harkess, and Guihong Bi

( Groot et al., 1997 ). Total pheophytins content was less in ‘Butterfly’ than ‘Beach’ ( Table 3 ), indicating fewer electron carriers in the photosynthetic electron transport chain in the bleaching-susceptible cultivar Butterfly. A heat-induced block of

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Brandon R. Smith and Lailiang Cheng

in mitochondrial electron transport under Fe deficiency. Although the function of the alternative oxidase (AOX) is not well understood, it has been shown to increase under nutrient stress, and when the rate of the tricarboxylic acid (TCA) cycle

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Jing Zhou, PingPing Li, JiZhang Wang, and Weiguo Fu

quantum yield of photosystem II photochemistry (Φ PSII ), and electron transport rate (ETR) ( Yan et al., 2013 ; Zheng et al., 2011 ). Although low light intensities increase plant height and specific leaf area, this factor reduces the leaf number (LN

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Krishna S. Nemali and Marc W van Iersel

limitations of RuBP synthesis (or electron transport rate) on photosynthesis in salvia compared with petunia. In support of this, Φ PSII (a measure of electron transport rate; Maxwell and Johnson, 2000 ) at ambient CO 2 concentration ( Fig. 5A ) was lower

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Katherine F. Garland, Stephanie E. Burnett, Michael E. Day, and Marc W. van Iersel

max ) and the light saturated electron transport rate driving the regeneration of ribulose-1,5-bisphosphate (J max ) can be influenced by reduced water availability ( Flexas and Medrano, 2002 ). Instantaneous measures of WUE l are commonly used to

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Sylvia Cherono, Charmaine Ntini, Misganaw Wassie, Mohammad Dulal Mollah, Mohammad A. Belal, Collins Ogutu, and Yuepeng Han

flux (TP 0 ), per PSII reaction center (RC), electron transport flux (ET 0 ), per RC, electron flux reducing end electron acceptors at the PSII acceptor side (RE 0 ), per RC, and absorption photon flux (ABS), per RC. A significant decrease in the fluxes

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Richard J. Heerema, Dawn VanLeeuwen, Rolston St. Hilaire, Vince P. Gutschick, and Bethany Cook

%) of leaf N ( Barker and Bryson, 2007 ; Evans, 1989 ). In addition to its relationship to leaf Rubisco content, N supply impacts Rubisco activity, leaf chlorophyll content, thylakoid protein activity, and electron transport activity ( Evans and

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Chenping Xu and Beiquan Mou

, CA). Growth and physiology measurements. Five weeks after transplanting in each trial, leaf maximum photochemical efficiency (F v /F m ), photochemical yield [Y (II)], and electron transport rate (ETR) were measured with a fluorometer (MINI