Introgressions from Oryza rufipogon Increase Photosynthetic Efficiency of KMR3 Rice Lines

Guttikonda, Haritha; Vishnukiran, T.; Yugandhar, Poli; Neelamraju, Sarla; Subrahmanyam, D.

doi:10.1016/j.rsci.2016.07.006

Cited by 35 publications

(36 citation statements)

References 63 publications

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“…Under stress-free environment, photosynthetic performances may not relate to the yield; however, under stressful conditions, preservation of photosynthetic system is vital for survival and production (Gu et al 2014, Haritha et al 2017. Strong correlation between grain yield with photosynthetic performance index (PIABS and PITOT) and efficiency of electron transport of PSII (ΦR0 and ΦE0) was observed (Table 3).…”

Section: Discussionmentioning

confidence: 99%

Yield and photochemical activity of selected rice cultivars from Eastern India under medium depth stagnant flooding

Panda¹,

Ray²,

Sarkar³

2019

Photosynt.

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Stagnant flooding (SF) is a serious threat for rice production in rainfed lowland areas of Southeast Asian countries. To overview the SF effect, photosynthetic performances and productivity were studied with three landraces (Ravana, Kamini, and Rashpanjor) and four high-yielding cultivars (Savitri, Savitri-Sub1, Gayatri, and Varshadhan) of rice under medium depth (40-50 cm) of water level. Stagnant flooding significantly increased the stem elongation and decreased yield and yield attributing parameters. The chlorophyll a fluorescence rises from O-to P-step with distinct J-and I-step were noticed in all the cultivars up to 75 d of SF. Prolonged flooding (> 2 months) perturbed both donor and acceptor side of PSII. Vitality indices (PIABS and PITOT) decreased greatly under prolonged SF. Analysis of O-J-I-P transients suggests that the information is useful for agricultural planning with the purpose to enhance rice yield under lowland medium depth SF.

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Section: Discussionmentioning

confidence: 99%

Yield and photochemical activity of selected rice cultivars from Eastern India under medium depth stagnant flooding

Panda¹,

Ray²,

Sarkar³

2019

Photosynt.

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“…An alternative and efficient strategy would be exploiting the photosynthetic variations within rice system itself, including cultivated and wild rice. There had been a few studies highlighting the photosynthetic differences within cultivated, and among cultivated and wild rice accessions (Kiran et al ., 2013; Kondamudi et al ., 2016; Rathore et al ., 2016; Haritha et al ., 2017; Sung et al ., 2017). In this study, we not only quantified leaf photosynthetic differences across cultivated and wild rice accessions, but also identified the underlying anatomical, biochemical, and photochemical traits mediating higher leaf photosynthesis in rice.…”

Section: Discussionmentioning

confidence: 99%

“…The P N has been shown to be positively associated with CE in rice (Yeo et al ., 1994; Ding et al ., 2015). Indeed, quantification of photosynthesis and related physiological parameters for introgressions from O. rufipogon in a cultivated background showed the influence of both CE as well as g s on higher leaf photosynthesis (Haritha et al ., 2017). Furthermore, higher g s and CE could also explain higher P N across different PAR in the wild rice (Fig 2a-II, S3a-III).…”

Section: Discussionmentioning

confidence: 99%

High photosynthesis rate in the selected wild rice is driven by leaf anatomy mediating high Rubisco activity and electron transport rate

Mathan

Singh

Jathar

et al. 2019

Preprint

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10The importance of increasing photosynthetic efficiency for sustainable crop yield 11 increases to feed the growing world population is well recognized. The natural genetic 12 variation for leaf photosynthesis in crop plants is an overlooked and untapped resource. The 13 genus Oryza, including cultivated rice and wild relatives, offers tremendous genetic 14 variability to explore photosynthetic differences, and underlying developmental, 15 photochemical, and biochemical basis. We quantified leaf photosynthesis and related 16 physiological parameters for ten cultivated and wild rice genotypes to identify 17 photosynthetically efficient wild rice species. Wild rice species with high leaf photosynthesis 18 per unit area had striking anatomical features, such as larger mesophyll cells with more 19 chloroplasts, larger and closer veins, and a smaller number of mesophyll cells between two 20 consecutive veins. In addition, photosynthetically efficient wild rice species showed an 21 efficient Photosystem II as well as higher carboxylation activity of Rubisco compared to less 22 efficient cultivated varieties, such as IR 64. Our results show the existence of desirable 23 variations in mesophyll and vein features, Photosystem II efficiency, and Rubisco activity in 24 the rice system itself that could possibly be targeted for higher leaf photosynthesis. Detailed 25 genetic and molecular understanding of these traits shall be instrumental in increasing 26 photosynthetic efficiency of cultivated rice. 27 28

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“…It is well-known that introgressions from wild species helps improve qualitative traits, such as disease and pest resistance (Kumar et al 2013, Sarao et al 2016 as well as quantitative traits, such as the grain yield (Gaikwad et al 2014, Arbelaez et al 2015, Ma et al 2016, Eizenga et al 2016, Bessho-Uehara et al 2017, Bhatia et al 2017, Haritha et al 2018, and abiotic stress tolerance to salinity (Quan et al 2018), drought (Kaur et al 2017), and heat (Prasanth et al 2017) in cultivars. O. rufipogon and O. nivara and their derived lines showed a high Chl content, P N, stomatal conductance (gs), transpiration rate (E), carboxylation efficiency (CE), and water-use efficiency (WUE) (Zhao et al 2008(Zhao et al , 2010Kiran et al 2013, Kondamudi et al 2016, Haritha et al 2017, Hamaoka et al 2017. Total dry mass was improved in BC2 lines derived from O. sativa × O. rufipogon (Masumoto et al 2004, Haritha et al 2017, whereas, CE was improved in BC2F2 lines derived from new plant type (NPT) rice line IR65598-110-2 × O. longistaminata (Ding et al 2014) compared to parents.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Oryza nivara introgression lines: A potential prebreeding resource to improve net photosynthetic rate in elite cultivars of rice

Guttikonda¹,

Vishnukiran²,

Rao³

et al. 2019

Photosynt.

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Photosynthesis is one of the fundamental processes influencing crop growth and productivity. In order to understand better the basis of variation in net photosynthetic rate (PN) and yield potential in rice, two backcross populations derived from Swarna × O. nivara were studied. Gas exchange and chlorophyll fluorescence measurements were taken at flowering stage and data on yield traits at harvest. PN was significantly correlated with stomatal conductance, transpiration rate, mesophyll conductance, carboxylation efficiency, yield per plant (YLDP), and dry mass in both populations. Ten introgression lines (ILs) showed higher PN than their parents. IL 230S showed highest PN with increased YLDP than the remaining ILs. Single marker analysis showed RM514 and RM48 was positively associated with PN and YLDP in popA, whereas RM204 and RM122 in popB. The first 4 principal components contributed 92 and 93% to the total genetic variation in each population, respectively.

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Introgressions from Oryza rufipogon Increase Photosynthetic Efficiency of KMR3 Rice Lines

Cited by 35 publications

References 63 publications

Yield and photochemical activity of selected rice cultivars from Eastern India under medium depth stagnant flooding

Yield and photochemical activity of selected rice cultivars from Eastern India under medium depth stagnant flooding

High photosynthesis rate in the selected wild rice is driven by leaf anatomy mediating high Rubisco activity and electron transport rate

Characterization of Oryza nivara introgression lines: A potential prebreeding resource to improve net photosynthetic rate in elite cultivars of rice

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