scholarly journals Studies on the Synchronization of Petiole Elongation in Soybean

2019 ◽  
Vol 88 (4) ◽  
pp. 268-272 ◽  
Author(s):  
Shuma Ohashi ◽  
Haruna Kurita ◽  
Yukitsugu Takahashi ◽  
Kiyoshi Nagasuga ◽  
Yuichi Nagaya ◽  
...  
Keyword(s):  
Petiole Elongation

Arabidopsis SMAX1 overaccumulation suppresses rosette shoot branching and promotes leaf and petiole elongation

2021 ◽  
Vol 553 ◽  
pp. 44-50
Author(s):  
Xiujuan Zheng ◽  
Xianfeng Yang ◽  
Zheng Chen ◽  
Wenjia Xie ◽  
Xinwu Yue ◽  
...  
Keyword(s):  
Shoot Branching ◽  
Petiole Elongation

scholarly journals Morphological Response of Soybean (Glycine max (L.) Merr.) Cultivars to Light Intensity and Red to Far-Red Ratio

Agronomy ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 428 ◽  
Author(s):  
Tina Hitz ◽  
Jens Hartung ◽  
Simone Graeff-Hönninger ◽  
Sebastian Munz
Keyword(s):  
Cropping Systems ◽  
Light Emitting Diode ◽  
Red Light ◽  
Photosynthetic Photon Flux Density ◽  
Photon Flux ◽  
Photon Flux Density ◽  
Shade Avoidance ◽  
Internode Elongation ◽  
Morphological Response ◽  
Petiole Elongation

In soybean production, the shade avoidance response can affect yield negatively in both mono- and inter-cropping systems due to increased heterogeneity of the crop and lodging. This is mainly regulated by photoreceptors responding to the ratio between red and far-red light (R:FR) and photosynthetic photon flux density (PPFD). In this study, three soybean cultivars were grown under different R:FR and PPFD in a light emitting diode (LED) climate chamber to disentangle the effect of each on morphology and dry matter. Results showed that plant organs were influenced differently and indicated an interaction with the increase in assimilates at high PPFD. Internode elongation was mainly influenced by low PPFD with an additive effect from low R:FR, whereas petiole elongation responded strongly under low R:FR. Hence, petiole elongation can be seen as the main response to the threat of shade (high PPFD and low R:FR) and both petiole and internode elongation as a response to true shade (low PPFD and low R:FR). Interactions between cultivar and light treatment were found for internode length and diameter and leaf mass ratio, which may be unique properties for specific cropping systems.

Competition between two varieites of subterranean clover (Trifolium subterraneum L.) as related to the proportions of seed sown

1961 ◽  
Vol 12 (5) ◽  
pp. 810 ◽  
Author(s):  
JN Black
Keyword(s):  
Vegetative Growth ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Light Energy ◽  
Sampling Occasion ◽  
Large Seed ◽  
Light Intensities ◽  
Petiole Elongation

The Yarloop and Tallaroolr varieties of subterranean clover (Trifolium subterraneum L.) xvere grown in swards in six mixtures, varying from 100% Yarloop/0%, Tallarook to 0% Yarloop/100% Tallarook, to find out whether the suppression of Tallarook by Yarloop consequent upon the greater petiole elongation of yarloop would still occur when only a few Yarloop plants were present. The swards were grown in large seed boxes and were sampled on four occasions during vegetative growth. Leaf areas for each 2 cm layer of the swards were determined separately for the two strains, and light intensities at each layer were measured at each sampling occasion. It was shown that Yarloop plants suppressed Tallarook in all mixtures. The relative amounts of light energy available to the two strains in the mixed swards left no doubt that the suppression of Tallarook was the result of shading by the taller-growing Yarloop plants.

The significance of petiole length, leaf area, and light interception in competition between strains of subterrranean clover (Trifolium subterraneum L.) grown in swards

1960 ◽  
Vol 11 (3) ◽  
pp. 277 ◽  
Author(s):  
JN Black
Keyword(s):  
Leaf Area ◽  
Leaf Development ◽  
Plant Competition ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Sampling Period ◽  
Dry Weight ◽  
Petiole Length ◽  
Petiole Elongation ◽  
Light Profiles

Three strains of subterranean clover differing in leaf development were grown in pure swards and in all combinations in mixtures. The strain Yarloop has relatively few large leaves held on long petioles; Tallarook has many small leaves and short petioles; Bacchus Marsh is intermediate in all these respects. The swards were grown in boxes and were sampled on four occasions during the period of vegetative growth. Leaf area in each 2 cm layer of the sward was determined separately, and for both strains in the mixed swards, and measurements of the light intensity reaching each layer were obtained. Root weights were determined for all swards and separately for each component of the mixed swards. Examination of the dry weights showed that the growth of the strain having the lesser petiole elongation was suppressed. In the extreme instance Tallarook was so suppressed when grown with Yarloop that in the final inter-sampling period it grew completely in the dark, and lost about half its dry weight. Bacchus Marsh also suppressed Tallarook, but to a lesser extent, while Bacchus Marsh was itself suppressed in competition with Yarloop. The amount of light energy intercepted by the two components of the mixed swards was calculated from the leaf area and light profiles, and confirmed the importance of the spatial distribution of leaves in plant competition. It was concluded that, in the absence of defoliation, the success of a strain under competition was associated with its potential petiole elongation.

scholarly journals The Involvement of Gibberellin 20-Oxidase Genes in Phytochrome-Regulated Petiole Elongation of Arabidopsis

2005 ◽  
Vol 138 (2) ◽  
pp. 1106-1116 ◽  
Author(s):  
Tamotsu Hisamatsu ◽  
Rod W. King ◽  
Chris A. Helliwell ◽  
Masaji Koshioka
Keyword(s):  
Petiole Elongation

scholarly journals YUCCAauxin biosynthetic genes are required for Arabidopsis shade avoidance

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2574 ◽  
Author(s):  
Patricia Müller-Moulé ◽  
Kazunari Nozue ◽  
Melissa L. Pytlak ◽  
Christine M. Palmer ◽  
Michael F. Covington ◽  
...  
Keyword(s):  
Light Treatment ◽  
Auxin Signaling ◽  
Shade Avoidance ◽  
Biosynthetic Genes ◽  
Petiole Elongation ◽  
Quadruple Mutant ◽  
Avoidance Responses

Plants respond to neighbor shade by increasing stem and petiole elongation. Shade, sensed by phytochrome photoreceptors, causes stabilization ofPHYTOCHROME INTERACTING FACTORproteins and subsequent induction ofYUCCAauxin biosynthetic genes. To investigate the role ofYUCCAgenes in phytochrome-mediated elongation, we examined auxin signaling kinetics after an end-of-day far-red (EOD-FR) light treatment, and found that an auxin responsive reporter is rapidly induced within 2 hours of far-red exposure.YUCCA2, 5, 8,and9are all induced with similar kinetics suggesting that theycould act redundantly to control shade-mediated elongation. To test this hypothesis we constructed ayucca2, 5, 8, 9quadruple mutant and found that the hypocotyl and petiole EOD-FR and shade avoidance responses are completely disrupted. This work shows thatYUCCAauxin biosynthetic genes are essential for detectable shade avoidance and thatYUCCAgenes are important for petiole shade avoidance.

scholarly journals Plant Movement. Submergence-Induced Petiole Elongation inRumex palustris Depends on Hyponastic Growth

2003 ◽  
Vol 132 (1) ◽  
pp. 282-291 ◽  
Author(s):  
Marjolein C.H. Cox ◽  
Frank F. Millenaar ◽  
Yvonne E.M. de Jong van Berkel ◽  
Anton J.M. Peeters ◽  
Laurentius A.C.J. Voesenek
Keyword(s):  
Petiole Elongation ◽  
Plant Movement ◽  
Hyponastic Growth

Petiole elongation inRumex species during submergence and ethylene exposure: The relative contributions of cell division and cell expansion

1990 ◽  
Vol 9 (1-4) ◽  
pp. 13-17 ◽  
Author(s):  
L. A. C. J. Voesenek ◽  
P. J. M. Perik ◽  
C. W. P. M. Blom ◽  
M. M. A. Sassen
Keyword(s):  
Cell Division ◽  
Cell Expansion ◽  
Petiole Elongation
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